The Easiest Mississippi Mud Cake

Ultimate Decadent Mississippi Mud Cake Recipe: A Southern Chocolate Dream

Prepare to indulge in the ultimate comfort dessert with this classic Mississippi Mud Cake recipe. Featuring a deeply tender and wonderfully moist homemade chocolate cake, a luscious layer of gooey melted marshmallows, and crowned with a rich, fudgy chocolate icing, this iconic dessert promises a heavenly experience with every single bite. It’s not just a cake; it’s a celebration of chocolate in its most decadent form.

A slice Mississippi Mud Cake on a plate with another slice in the background.

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Why You’ll Adore This Classic Mississippi Mud Cake

This easy homemade Mississippi Mud Cake recipe is more than just a dessert; it’s a testament to the joy of baking and the undeniable appeal of chocolate. From the moment you take your first bite, you’ll understand why this cake holds such a cherished place in Southern culinary traditions. It delivers an unparalleled experience that combines rich chocolate flavor with irresistible textures, making it a true showstopper for any gathering.

The moist, intensely chocolatey cake base sets the stage, providing a robust foundation that’s far from dry or crumbly. This tender crumb melts in your mouth, paving the way for the gooey surprise that follows. A generous layer of perfectly melted mini marshmallows adds a delightful chewiness and a hint of sweetness, creating a beautiful contrast to the deep chocolate tones. Finally, it’s all crowned with a luscious, warm chocolate icing that’s so decadent, it’s reminiscent of a Texas Sheet Cake, only thicker and more luxurious.

Whether you’re bringing it to a potluck, serving it at a family dinner, or simply treating yourself, this Mississippi Mud Cake is always a crowd-pleaser. Its rich flavors and diverse textures guarantee that every slice will be savored. It’s truly a chocolate lover’s dream, fulfilling every craving for a comforting, homemade dessert. This recipe showcases the simple elegance of classic baking, making a truly memorable treat.

Beyond its incredible taste, this recipe is surprisingly straightforward to follow, even for novice bakers. The steps are clear, and the ingredients are readily available, making a seemingly complex dessert accessible to everyone. We encourage you to try this recipe and discover your new favorite chocolate cake!

Some of our other favorite cake recipes are Meyer Lemon Bundt Cake, Homemade Carrot Cake with Whipped Cream Cheese Frosting, Baker’s German Chocolate Cake Recipe, and Samoa Cake.

What is Mississippi Mud Cake? A Beloved Southern Dessert

Mississippi Mud Cake is a renowned chocolate sheet cake with deep Southern roots, celebrated for its rich flavor and multi-textured layers. This dessert typically consists of three delightful components: a dense, moist chocolate cake base, a layer of soft, melted marshmallows, and a final generous topping of warm, fudgy chocolate frosting. The “mud” in its name alludes to the dark, rich color of the chocolate and its wonderfully gooey, almost muddy consistency once the marshmallows and warm frosting meld together.

This cake is often compared to a denser, more intense version of a Texas Sheet Cake, but with the added decadence of marshmallows. It’s a dessert that evokes images of comforting homemade treats and warm hospitality. The combination of intense chocolate flavor, the playful chew of marshmallows, and the silky-smooth frosting makes for an unforgettable dessert experience. It’s hearty, satisfying, and perfect for feeding a crowd, embodying the generous spirit of Southern baking.

Ingredients for Mississippi Mud Cake on a dark surface.

Key Ingredients for the Perfectly Moist Chocolate Cake Base

Creating a truly exceptional Mississippi Mud Cake starts with understanding the role of each ingredient in the cake base. This careful selection and combination result in a chocolate cake that is both tender and incredibly moist, forming the perfect canvas for the delicious toppings.

  • Dry Ingredients
    • All-purpose flour: Provides the essential structure for the cake.
    • Unsweetened cocoa powder: The primary source of chocolate flavor. Ensure it’s natural unsweetened cocoa, not Dutch-processed, as it reacts differently with the leavening agents.
    • Granulated sugar: Adds sweetness, but also contributes to the cake’s moisture and tender crumb.
    • Baking powder & baking soda: These are crucial leavening agents that give the cake its rise and light texture. Baking soda, when combined with acidic ingredients like sour cream and natural cocoa, creates a tender crumb.
    • Kosher salt: Balances the sweetness and enhances the overall chocolate flavor.
  • Wet Ingredients
    • Vegetable oil (or Canola oil): Contributes to a supremely moist and tender cake crumb, unlike butter which can sometimes make cakes denser.
    • Large eggs: Provide structure, richness, and moisture. Ensure they are at room temperature for better emulsion with other ingredients.
    • Whole milk: Adds moisture and helps activate the leavening agents. Room temperature milk incorporates more smoothly.
    • Sour cream: A secret weapon for moist cakes! It adds incredible richness, a subtle tang, and further activates the baking soda, resulting in a tender texture. Also best at room temperature.
    • Vanilla extract: Enhances the chocolate flavor and adds a warm, aromatic depth.
    • Boiling water: This is vital for “blooming” the cocoa powder, intensifying its chocolate flavor and contributing to the cake’s smooth, moist texture. Adding it slowly helps temper the eggs.
Ingredients for the topping of a Mississippi Mud Cake on a dark surface.

Essential Topping Ingredients for Irresistible Layers

The magic of Mississippi Mud Cake truly comes alive with its signature toppings. Each component plays a vital role in creating the distinctive gooey marshmallow layer and the rich, fudgy icing that makes this dessert so legendary.

  • Marshmallows
    • Mini marshmallows: These are preferred for their ability to melt quickly and evenly over the hot cake, creating that traditional, sticky, and slightly spongy texture that is characteristic of a true Mississippi Mud Cake. Their small size ensures a smooth, uniform layer.
  • Chocolate Icing – This warm, pourable icing sets beautifully, creating a fudgy top layer.
    • Unsalted butter: Provides richness and a smooth, creamy base for the frosting.
    • A pinch of kosher salt: Essential for cutting through the sweetness and deepening the chocolate flavor in the icing.
    • Whole milk: Helps achieve the perfect consistency for a pourable yet fudgy icing.
    • Unsweetened cocoa powder: Delivers the intense chocolate flavor for the icing.
    • Vanilla extract: Adds complexity and enhances the overall chocolate notes.
    • Powdered sugar (confectioners sugar): The main sweetener and thickener for the icing, giving it a smooth, melt-in-your-mouth texture.

How to Make Mississippi Mud Cake: A Step-by-Step Guide

Crafting this delicious Mississippi Mud Cake is a rewarding experience. Follow these steps carefully to ensure a perfectly moist cake with delectable marshmallow and chocolate icing layers.

Preparing the Cake Base

Begin by preheating your oven to 350 degrees F (175 degrees C). It’s crucial to ensure your oven is at the correct temperature for even baking. Next, prepare a 9×13-inch baking pan by liberally coating it with baking spray. This will prevent sticking and ensure your cake comes out easily.

In a medium bowl, whisk together all the dry ingredients: the all-purpose flour, unsweetened cocoa powder, granulated sugar, baking powder, baking soda, and kosher salt. Mix them thoroughly until they are well combined and resemble a boxed chocolate cake mix, free of lumps. This ensures even distribution of the leavening agents and flavor throughout the batter.

Dry ingredients for Mississippi Mud Cake whisked together in a metal bowl.
Wet ingredients for Mississippi Mud Cake in a glass mixing bowl.

In the bowl of a stand mixer fitted with a paddle attachment, or a large mixing bowl with an electric hand mixer, combine the wet ingredients: the large eggs, vegetable oil, whole milk, sour cream, and vanilla extract. Beat these together until they are thoroughly combined and smooth. Remember, using room temperature ingredients here is key for a well-emulsified batter.

Wet ingredients for Mississippi Mud Cake combined in a glass mixing bowl.
Wet ingredients for Mississippi Mud Cake beat together in a glass bowl to incorporate air bubbles.

Now, for a crucial step: carefully and slowly add the boiling water to the egg mixture at a low speed. This process is called tempering, and it prevents the eggs from cooking and scrambling. Once the boiling water is incorporated, increase the mixer speed to high and beat for 1 minute. This step is vital for incorporating air bubbles, which contribute to the cake’s light and fluffy texture.

Finally, gradually add the whisked dry ingredient mixture to the wet mixture. Mix on low speed until everything is just combined. Be careful not to overmix, as overworking the gluten in the flour can lead to a dense and tough cake. Stop mixing as soon as no streaks of dry flour remain.

Mississippi Mud Cake batter mixed together in a glass mixing bowl.
Mississippi Mud Cake batter in a 9x13 metal baking pan.

Pour the prepared batter evenly into your 9×13-inch baking pan. Bake for approximately 28 to 30 minutes, or until a wooden skewer or toothpick inserted into the center of the cake comes out clean. This indicates that the cake is fully cooked. Avoid overbaking, as this can dry out your delicious chocolate cake.

Adding the Marshmallow Layer and Icing

Once the cake is baked, remove it from the oven. Immediately and evenly spread the mini marshmallows over the entire top of the hot cake. Place the cake back into the warm oven for just another 2 minutes, or until the marshmallows are slightly melted and look puffy. This brief return to the oven ensures they soften beautifully without browning too much. After this, remove the cake from the oven and transfer it to a wire rack to cool completely. It’s important for the cake to be cool before frosting to prevent the icing from melting too much and becoming runny.

Chocolate frosting for the Mississippi Mud Cake in a metal sauce pan.
Powdered sugar being beaten into the chocolate frosting for the Mississippi Mud Cake.

While the cake cools, prepare the decadent chocolate icing. In a medium saucepan, melt the unsalted butter over medium-low heat. Once melted, gradually whisk in the whole milk and unsweetened cocoa powder, along with a pinch of kosher salt. Continue to cook this mixture for about 2 minutes, whisking constantly, until it is smooth and slightly thickened. Be careful not to scorch the chocolate.

Remove the saucepan from the heat. Immediately add the vanilla extract and powdered sugar. Using an electric mixer, beat the icing until it is completely smooth and free of any lumps. The icing should be warm and pourable. Without delay, drizzle the warm chocolate frosting evenly over the cooled cake, covering the melted marshmallow layer. The warmth of the icing will help it spread beautifully and create a glossy finish.

Chocolate frosting being poured over the melted mini marshmallows on the Mississippi Mud Cake.
Mississippi Mud Cake in a metal baking pan.

For the best results, refrigerate the finished Mississippi Mud Cake for at least 30 minutes, or until the icing has set up to a somewhat firm, fudgy consistency. This allows the layers to meld and the icing to firm up, making for clean slices and an even more satisfying texture. Serve chilled or at room temperature, perhaps with a scoop of vanilla ice cream or a dollop of whipped cream.

A slice Mississippi Mud Cake on a plate with another slice in the background.

Expert Tips and Creative Variations for Your Mud Cake

Achieving the perfect Mississippi Mud Cake involves a few key techniques and allows for some delicious customization. Here are some expert tips and creative variations to make your cake truly exceptional:

  • Measure Flour Properly: For accurate results, always aerate your flour by fluffing it with a fork or spoon, then spoon it into your measuring cup, and finally level it off with a straight edge. Never scoop directly from the bag, as this can compact the flour and lead to a denser cake.
  • Use Room Temperature Ingredients: This tip applies to eggs, milk, and sour cream. Room temperature ingredients emulsify better, creating a smoother, more uniform batter and a finer crumb in your finished cake.
  • Choose the Right Cocoa Powder: It’s crucial to use plain, unsweetened natural cocoa powder for this recipe. Dutch-processed cocoa powder has been treated to reduce its acidity, which means it won’t react properly with the baking soda (an alkaline ingredient) to provide the necessary lift. Using natural cocoa ensures your cake rises beautifully.
  • Avoid Overmixing the Batter: Once you add the dry ingredients to the wet, mix only until just combined. Overmixing develops the gluten in the flour, which can result in a tough, chewy, and dense cake. A few small lumps are perfectly fine.
  • Enhance the Topping with Nuts: For an added layer of texture and flavor, sprinkle chopped pecans or walnuts over the melted marshmallows before pouring on the chocolate icing. The nuts provide a satisfying crunch that complements the soft cake and gooey toppings.
  • Vary the Frosting Texture: If you prefer a more rustic, slightly “lumpy” look and a thicker set to your Mississippi Mud Cake’s icing, allow the cake to cool completely *before* spreading the chocolate icing. Pouring warm icing over a warm cake results in a smoother, slightly runnier finish, while pouring it over a cooled cake will yield a firmer, more set icing.
  • Boost Chocolate Flavor with Coffee: Replace the boiling water in the cake batter with hot brewed coffee. Coffee, especially strong black coffee or espresso, doesn’t make the cake taste like coffee but instead significantly deepens and enhances the natural chocolate flavor, making it even more rich and complex.
  • Marshmallow-Free Option: If marshmallows aren’t your preference, feel free to omit them entirely. This cake is still absolutely delicious and incredibly moist when simply frosted with the rich chocolate icing. It becomes a fantastic fudgy chocolate sheet cake.
  • Add a Pinch of Flaky Sea Salt: A light sprinkle of flaky sea salt over the finished chocolate icing can elevate the flavors, creating a gourmet salted chocolate experience.
  • Serving Suggestions: This cake is fantastic on its own, but it’s even better served warm with a scoop of vanilla bean ice cream, a dollop of fresh whipped cream, or a handful of fresh berries like raspberries or strawberries for a touch of tartness.
  • Consider a Different Pan Size: While a 9×13 inch pan is standard, you can use other sizes. If using a larger sheet pan (e.g., 10×15 inches), reduce the baking time and monitor closely. For smaller pans, you might need to increase the baking time slightly and possibly reduce the recipe yield.

Frequently Asked Questions (FAQs) about Mississippi Mud Cake

Here are some common questions about making and enjoying this classic Mississippi Mud Cake:

Why is it necessary to add boiling water to a cake batter?

Boiling water serves a dual purpose in this recipe. Firstly, it helps to “bloom” the cocoa powder, which means it intensifies and deepens the chocolate flavor. Secondly, it contributes to a cake that is exceptionally smooth, softer, and less prone to crumbling, resulting in a wonderfully moist texture. Remember to add it slowly to temper the eggs and prevent them from cooking.

Can I use marshmallow fluff (marshmallow creme) instead of marshmallows?

Yes, you absolutely can! If using marshmallow fluff, allow the cake to cool for about 5 to 10 minutes after removing it from the oven. Then, gently spread the fluff over the warm cake. Let it sit for another 5 minutes or so; the residual heat from the cake will help the fluff become more pliable and easier to spread smoothly across the surface. This creates a slightly different but equally delicious gooey layer.

Can I make this with regular marshmallows?

Yes, you can use regular-sized marshmallows. However, for a more even melt and spread, it’s highly recommended to chop them into smaller pieces before distributing them over the hot cake. This will help achieve a similar gooey layer as with mini marshmallows.

Can this be made ahead of time?

Absolutely! Mississippi Mud Cake is an excellent make-ahead dessert. In fact, like many cakes, its flavors often deepen and improve overnight, making it even more delicious the next day. Simply store it properly, and it will be ready to impress.

How should I store Mississippi Mud Cake?

This cake can be stored covered tightly at room temperature for up to 2 days, especially if your kitchen is cool. For extended freshness, or if your kitchen is warm, refrigerate the cake, covered tightly, for up to 4 days. Always ensure it’s well-sealed to prevent it from drying out.

Can I freeze Mississippi Mud Cake?

Yes, you can freeze Mississippi Mud Cake. Wrap it tightly in plastic wrap, then an additional layer of aluminum foil, or place it in a freezer-safe airtight container. It can be frozen for up to 2 months. Thaw it overnight in the refrigerator. However, be aware that the texture of the marshmallows may change slightly after freezing and thawing, becoming a bit chewier rather than super gooey.

What kind of cocoa powder should I use for the best results?

For this recipe, it’s best to use natural unsweetened cocoa powder. Brands like Hershey’s or Ghirardelli are excellent choices. Avoid Dutch-processed cocoa powder, as its altered acidity will not react correctly with the baking soda in the recipe, which is essential for the cake’s rise and tender texture.

Why is my Mississippi Mud Cake dry?

A dry cake is usually the result of overbaking. Keep a close eye on the cake during the last few minutes of baking and remove it as soon as a toothpick inserted into the center comes out clean. Incorrect flour measurement (too much flour) or using ingredients that are not at room temperature can also contribute to a drier cake.

Can I make this recipe gluten-free?

While this specific recipe uses all-purpose flour, you can often adapt it to be gluten-free by using a good quality 1:1 gluten-free baking flour blend. Look for blends that specifically state they are suitable for cakes and have xanthan gum included. The baking time might need slight adjustment, so keep an eye on it.

More Decadent Chocolate Cake Recipes to Explore

If you’ve fallen in love with the rich flavors of this Mississippi Mud Cake, you’ll be thrilled to discover more chocolatey delights. Here are some other irresistible chocolate cake recipes that are sure to satisfy your cravings:

Almond Joy Cake

Chocolate Cupcake Recipe

Dark Chocolate Espresso Cake

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A slice Mississippi Mud Cake on a plate with another slice in the background.

Mississippi Mud Cake

A tender, moist homemade chocolate cake, and gooey marshmallows, topped with decadent chocolate icing.

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Course: Dessert
Cuisine: American
Prep Time: 20 minutes
Cook Time: 30 minutes
Servings: 12
Calories: 593kcal

Ingredients

 

Cake

  • 2 cups All-purpose flour
  • 1/2 cup Unsweetened cocoa powder
  • 2 cups Granulated sugar
  • 2 tsp Baking powder
  • 1 1/2 tsp Baking Soda
  • 1/2 tsp Kosher salt
  • 2 large Eggs room temperature
  • 1/2 cup Vegetable oil or Canola oil
  • 1/2 cup Whole milk room temperature
  • 1/4 cup Sour cream room temperature
  • 1 tsp Vanilla extract
  • 1 cup Boiling water

Topping

  • 10.5 oz Mini marshmallows
  • 1/2 cup Unsalted butter
  • 6 tbsp Whole milk
  • 1/8 tsp Kosher salt
  • 3 tbsp Unsweetened cocoa powder
  • 1 tsp Vanilla extract
  • 3 cups Powdered sugar

Instructions

Cake

  • Preheat the oven to 350 degrees F. Prepare a 9×13 baking pan with non-stick cooking spray.
  • In a medium bowl whisk together the flour, cocoa powder, granulated sugar, baking powder, baking soda, and salt.
    2 cups All-purpose flour, 1/2 cup Unsweetened cocoa powder, 2 cups Granulated sugar, 2 tsp Baking powder, 1 1/2 tsp Baking Soda, 1/2 tsp Kosher salt
  • In a large mixing bowl use an electric mixer to beat the eggs, oil, milk, sour cream, and vanilla until thoroughly combined.
    2 large Eggs, 1/2 cup Vegetable oil, 1/2 cup Whole milk, 1/4 cup Sour cream, 1 tsp Vanilla extract
  • Carefully and slowly add the boiling water at a low speed to temper the egg mixture. You don’t want to cook the eggs. Beat on high for 1 minute to form air bubbles in the mixture.
    1 cup Boiling water
  • Add the dry ingredient mixture to the wet mixture and mix until combined well.
  • Pour the batter into the prepared baking pan and bake for 28 to 30 minutes, or until a toothpick inserted in the center comes out clean.

Topping

  • Remove the cake from the oven, spread the marshmallows over the top of the hot cake, and place it back in the oven for another 2 minutes until the marshmallows are slightly melted.
    10.5 oz Mini marshmallows
  • Remove the cake to a wire rack to cool completely before frosting.
  • In a medium saucepan, melt the butter and salt over medium-low heat. Gradually whisk in the milk and cocoa powder, and cook for about 2 minutes whisking constantly.
    1/2 cup Unsalted butter, 6 tbsp Whole milk, 3 tbsp Unsweetened cocoa powder, 1/8 tsp Kosher salt
  • Remove the saucepan from the heat, add the vanilla extract and powdered sugar. Using an electric mixer beat the icing until smooth. Immediately drizzle the warm icing over the cake.
    1 tsp Vanilla extract, 3 cups Powdered sugar
  • Refrigerate for 30 minutes or until the icing has set up somewhat firm.

Notes

Be sure to use room-temperature eggs, milk, and sour cream. They will incorporate better into the batter, leading to a smoother cake.

Do not pour all the boiling water in at once. Add it gradually and slowly to temper the egg mixture, ensuring you do not cook the eggs.

Be careful not to overmix the batter. Overmixing can develop the gluten in the flour, resulting in a dense, tough cake rather than a tender one.

Storing – This delectable cake can be stored covered tightly at room temperature for up to 2 days or in the refrigerator for up to 4 days. Always ensure it’s well-sealed to maintain its moisture.

Freezing – This cake can be frozen for longer storage. Just be aware that the marshmallows will undergo a slight change in texture, becoming a bit chewier. Wrap the cooled cake tightly in plastic wrap, then aluminum foil, or place it in a freezer-safe container and freeze for up to 2 months. Thaw in the refrigerator overnight before serving.

Nutrition

Calories: 593kcal | Carbohydrates: 104g | Protein: 5g | Fat: 20g | Saturated Fat: 8g | Polyunsaturated Fat: 6g | Monounsaturated Fat: 5g | Trans Fat: 0.4g | Cholesterol: 56mg | Sodium: 279mg | Potassium: 213mg | Fiber: 2g | Sugar: 78g | Vitamin A: 340IU | Vitamin C: 0.04mg | Calcium: 74mg | Iron: 2mg