Mississippi Mud Cake

Name: Mississippi Mud Cake
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Ingredients: 1.5 cups all-purpose flour; 1 cup unsalted butter (melted); 2 cups granulated sugar; 0.75 cup cocoa powder; 1 tsp vanilla extract; 3 large eggs; 10.5 oz marshmallows (about 20 large)

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By: Maria
Posted: 01/09/2025

Mississippi Mud Cake is a rich, indulgent dessert that’s a chocolate lover’s dream. This decadent cake features a moist chocolate base, gooey marshmallow topping, and a luscious chocolate frosting, all finished with a sprinkle of crunchy nuts. Perfect for potlucks, parties, or as a special treat, this southern classic is a guaranteed crowd-pleaser.

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Ingredients

For the Cake

1 cup (230 g) unsalted butter, melted
1/2 cup (50 g) unsweetened cocoa powder
2 cups (400 g) granulated sugar
4 large eggs
1 tsp vanilla extract
1 1/2 cups (190 g) all-purpose flour
1/4 tsp salt
1 cup (240 ml) buttermilk

For the Toppings

3 cups (150 g) mini marshmallows

For the Chocolate Frosting

1/2 cup (115 g) unsalted butter, softened
1/3 cup (30 g) unsweetened cocoa powder
4 cups (480 g) powdered sugar
1/2 cup (120 ml) milk
1 tsp vanilla extract
1/2 cup (60 g) chopped pecans or walnuts (optional)

Directions

Step 1: Prepare the Cake Batter

Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
In a large mixing bowl, whisk together the melted butter and cocoa powder until smooth.
Add the granulated sugar, eggs, and vanilla extract, mixing until fully combined.
Gradually add the flour, salt, and buttermilk, stirring until just combined.

Step 2: Bake the Cake

Pour the batter into the prepared pan and bake for 30-35 minutes, or until a toothpick inserted into the center comes out clean.

Step 3: Add the Marshmallows

Remove the cake from the oven and immediately sprinkle the mini marshmallows evenly over the top. Return the cake to the oven for 2-3 minutes, or until the marshmallows soften and puff up. Let cool slightly.

Step 4: Make the Chocolate Frosting

In a medium saucepan over low heat, melt the butter. Stir in the cocoa powder until smooth.
Gradually whisk in the powdered sugar, milk, and vanilla extract, mixing until smooth and creamy.

Step 5: Frost the Cake

Pour the warm frosting over the marshmallow-topped cake, spreading it evenly with a spatula. Sprinkle with chopped pecans or walnuts, if desired.

Step 6: Cool and Serve

Allow the cake to cool completely before slicing into squares. Serve and enjoy!

Notes

Storage: Store the cake in an airtight container at room temperature for up to 2 days or in the refrigerator for up to 5 days.
Freezing: Wrap individual slices tightly in plastic wrap and freeze for up to 3 months. Thaw overnight in the refrigerator before serving.
Customization: Swap pecans or walnuts for shredded coconut or chocolate chips for a unique twist.

Conclusion

Mississippi Mud Cake is a decadent dessert that combines layers of chocolatey goodness with gooey marshmallows and rich frosting. Perfect for chocolate lovers and dessert enthusiasts alike, this Southern classic is sure to be a hit at any gathering. Try this recipe today and enjoy a slice of indulgent bliss!

Frequently Asked Questions

Can I make the Mississippi Mud Cake ahead of time?

Yes, you can definitely make this cake ahead! You can bake the cake a day in advance, let it cool completely, and then frost it just before serving. Alternatively, you can bake and frost the cake completely and store it in an airtight container at room temperature for up to 2 days, or in the refrigerator for up to 5 days. For longer storage, freeze individual slices wrapped tightly in plastic wrap for up to 3 months; thaw them overnight in the refrigerator before serving.

What are some ingredient substitutions I can make for the Mississippi Mud Cake?

You can substitute the all-purpose flour with a gluten-free all-purpose flour blend, using a 1:1 ratio. For the buttermilk, you can make a substitute by adding 1 tablespoon of white vinegar or lemon juice to a measuring cup, then adding enough milk to reach the 1 cup mark; let it sit for 5 minutes before using. If you don’t have pecans or walnuts for the topping, try shredded coconut or chocolate chips instead, using the same amount.

How do I know when the Mississippi Mud Cake is perfectly baked?

The cake is done when a toothpick inserted into the center comes out clean, indicating the batter is fully cooked. The edges of the cake should also be slightly pulling away from the sides of the pan. The baking time is approximately 30-35 minutes, but always check for doneness a few minutes before the end of the suggested baking time. The marshmallows are ready when they’re softened and slightly puffed up, which takes about 2-3 minutes in the oven.

Can I double the Mississippi Mud Cake recipe?

Yes, you can double the recipe! You’ll need to use a larger baking pan, such as a 9×13 inch pan, or two 9×13 inch pans. The baking time may need to be slightly adjusted, so keep a close eye on the cake and check for doneness a few minutes earlier than the original recipe suggests. Ensure your oven can accommodate the larger pan or pans without overcrowding.

Does the Mississippi Mud Cake have any nutritional benefits?

While this cake is a treat, it does offer some nutritional benefits. The eggs provide protein and essential nutrients. The milk and butter contribute calcium and fat-soluble vitamins. Nuts, if added, offer healthy fats, fiber, and antioxidants. However, remember this is a dessert, so enjoy it in moderation as part of a balanced diet.