Mississippi Mud Cake
There’s something undeniably comforting about a slice of Mississippi Mud Cake. With its rich chocolate flavor, gooey marshmallows, and decadent frosting, this dessert is a true celebration of southern baking traditions. Whether you’re serving it at a family gathering or enjoying a quiet evening at home, Mississippi Mud Cake is sure to bring a smile to your face. Let’s dive into what makes this cake so special and how you can create your own masterpiece in the kitchen.
What Makes This Recipe Special

Mississippi Mud Cake is not just another chocolate cake; it’s a delightful blend of textures and flavors. The cake itself is moist and fudgy, thanks to the addition of boiling water and sour cream, while the layer of mini marshmallows adds an unexpected sweetness and chewiness. Topped off with a luscious chocolate frosting, this cake is a celebration of chocolate in every bite. It’s perfect for chocoholics and anyone who loves a rich dessert!
Ingredient Breakdown
To create this delightful Mississippi Mud Cake, you’ll need the following ingredients:
- 2 cups all-purpose flour: The foundation of your cake, giving it structure.
- 1 ½ cups granulated sugar: For sweetness that balances the chocolate.
- ½ cup light brown sugar, packed: Adds moisture and a hint of caramel flavor.
- ¾ cup unsweetened cocoa powder: The star ingredient that gives the cake its chocolatey richness.
- 2 teaspoons baking powder: Helps the cake rise perfectly.
- 1 ½ teaspoons baking soda: Provides additional lift for a fluffy texture.
- ¾ teaspoon salt: Enhances all the flavors in the cake.
- ¾ cup oil (canola or vegetable): Keeps the cake moist.
- 2 eggs: Binds the ingredients together and adds richness.
- 1 teaspoon vanilla extract: A classic flavor enhancer.
- 6 tablespoons milk: Adds moisture to the batter.
- ⅓ cup sour cream: Contributes to the cake’s tenderness.
- 1 cup boiling water: Intensifies the chocolate flavor and helps create a moist cake.
- 10.5-ounce package mini marshmallows: These will create a delightful chewy layer on top.
- ½ cup butter (1 stick): Essential for the frosting, adding creaminess.
- 6 tablespoons milk: For a smooth frosting consistency.
- 3 heaping tablespoons unsweetened cocoa powder: For a rich chocolate frosting.
- 1 teaspoon vanilla extract: Rounds out the flavor of the frosting.
- 3 cups powdered sugar: Sweetens and thickens the frosting.
Equipment at a Glance
To make your Mississippi Mud Cake, gather the following equipment:
- Baking pan: A 9×13 inch pan works perfectly for this cake.
- Mixing bowls: For combining your dry and wet ingredients.
- Whisk and spatula: Essential for mixing and smoothing the batter and frosting.
- Measuring cups and spoons: Accuracy is key in baking.
- Oven: Preheat it to ensure your cake bakes evenly.
Make Mississippi Mud Cake: A Simple Method

Creating the perfect Mississippi Mud Cake is easier than you might think. Just follow these simple steps:
Step 1: Preheat the Oven
Preheat your oven to 350°F (175°C) and grease your 9×13 inch baking pan or line it with parchment paper for easy removal.
Step 2: Mix Dry Ingredients
In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, brown sugar, cocoa powder, baking powder, baking soda, and salt until well combined.
Step 3: Combine Wet Ingredients
In another bowl, mix together the oil, eggs, vanilla extract, milk, and sour cream until smooth.
Step 4: Combine Mixtures
Pour the wet ingredients into the dry ingredients and stir until just combined. Then, carefully add the boiling water to the mixture and stir until the batter is smooth and well combined. The batter will be thin, which is perfect!
Step 5: Bake the Cake
Pour the batter into the prepared baking pan and bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
Step 6: Add Marshmallows
Once the cake is baked, remove it from the oven and sprinkle the mini marshmallows evenly over the top. Return the cake to the oven for an additional 5 minutes or until the marshmallows are puffed and slightly golden.
Step 7: Prepare the Frosting
While the marshmallows are baking, prepare the frosting. In a saucepan over medium heat, melt the butter. Once melted, stir in the 6 tablespoons of milk, cocoa powder, and vanilla extract. Bring to a gentle simmer, then remove from heat and whisk in the powdered sugar until smooth and creamy.
Step 8: Frost the Cake
Once the marshmallows are ready, remove the cake from the oven again and let it cool slightly. Pour the chocolate frosting over the warm marshmallow layer, spreading it evenly with a spatula.
Step 9: Cool and Serve
Allow the cake to cool completely in the pan before slicing it into squares and serving. Enjoy the delightful layers of chocolate and marshmallow goodness!
Seasonal Ingredient Swaps

If you want to switch things up or adapt the recipe based on availability, consider these seasonal swaps:
- Fall: Add pumpkin puree for a seasonal twist and a hint of spice.
- Winter: Incorporate peppermint extract instead of vanilla for a festive flavor.
- Spring: Swap out mini marshmallows for fresh berries to add a fruity layer.
- Summer: Use coconut milk in place of regular milk for a tropical touch.
Little Things that Matter
Attention to detail can make a big difference in baking. Here are some tips to ensure your Mississippi Mud Cake turns out perfect:
- Use high-quality cocoa powder for the best chocolate flavor.
- Make sure to measure your ingredients accurately; baking is a science!
- Don’t skip the boiling water; it really enhances the chocolate flavor and creates a moist cake.
- Let the cake cool completely before frosting to prevent the frosting from melting.
Shelf Life & Storage
Mississippi Mud Cake is best enjoyed fresh, but it can be stored for a few days. Here’s how to keep it at its best:
- Store any leftover cake in an airtight container at room temperature for up to 3 days.
- For longer storage, cover the cake tightly with plastic wrap and refrigerate for up to a week.
- You can also freeze the cake for up to 3 months; just make sure to wrap it well to prevent freezer burn.
Quick Questions
Can I make Mississippi Mud Cake ahead of time?
Yes! You can bake the cake a day in advance and frost it just before serving for the best results.
Can I use different types of sugar in this recipe?
While the recipe calls for granulated and brown sugars, you can experiment with coconut sugar or other alternatives, but this may alter the flavor and texture slightly.
What if I don’t have sour cream?
You can substitute plain yogurt or even buttermilk for a similar effect in terms of moisture and tang.
Can I add nuts or other mix-ins?
Absolutely! Chopped pecans or walnuts can be added to the batter for extra texture and flavor.
Final Thoughts
Baking Mississippi Mud Cake is not just about following a recipe; it’s about creating a moment of joy. The combination of rich chocolate, fluffy marshmallows, and creamy frosting is sure to impress anyone who takes a bite. Whether you’re baking it for a special occasion or simply to indulge your sweet tooth, this cake is a classic that never goes out of style. So gather your ingredients, preheat your oven, and let the magic of Mississippi Mud Cake fill your kitchen with warmth and happiness. Enjoy every gooey, chocolatey bite!

Mississippi Mud Cake
Ingredients
Equipment
Method
- Step 1: Preheat your oven to 350°F (175°C) and grease your 9x13 inch baking pan or line it with parchment paper for easy removal.
- Step 2: In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, brown sugar, cocoa powder, baking powder, baking soda, and salt until well combined.
- Step 3: In another bowl, mix together the oil, eggs, vanilla extract, milk, and sour cream until smooth.
- Step 4: Pour the wet ingredients into the dry ingredients and stir until just combined. Then, carefully add the boiling water to the mixture and stir until the batter is smooth and well combined.
- Step 5: Pour the batter into the prepared baking pan and bake in the preheated oven for 30-35 minutes, or until a toothpick inserted into the center comes out clean.
- Step 6: Once the cake is baked, remove it from the oven and sprinkle the mini marshmallows evenly over the top. Return the cake to the oven for an additional 5 minutes or until the marshmallows are puffed and slightly golden.
- Step 7: While the marshmallows are baking, prepare the frosting. In a saucepan over medium heat, melt the butter. Once melted, stir in the 6 tablespoons of milk, cocoa powder, and vanilla extract. Bring to a gentle simmer, then remove from heat and whisk in the powdered sugar until smooth and creamy.
- Step 8: Once the marshmallows are ready, remove the cake from the oven again and let it cool slightly. Pour the chocolate frosting over the warm marshmallow layer, spreading it evenly with a spatula.
- Step 9: Allow the cake to cool completely in the pan before slicing it into squares and serving.
Notes
- Use high-quality cocoa powder for the best chocolate flavor.
- Make sure to measure your ingredients accurately; baking is a science!
- Don’t skip the boiling water; it really enhances the chocolate flavor and creates a moist cake.
- Let the cake cool completely before frosting to prevent the frosting from melting.
