This Mississippi Mud Cake is a chocolate lovers dream! A delicious homemade chocolate cake with melted marshmallows and warm chocolate frosting poured on top. Trust me, it’s as delicious as it sounds!
When it comes to sweets, chocolate cake is my weakness! Don’t get me wrong, I’m not one to discriminate against pies, cookies, or other baked treats. But even though I love them all, there’s no treat more tempting than chocolate cake! This particular version of chocolate cake goes above and beyond. It’s called a “Mississippi Mud” cake because of the layers of soft marshmallow and chocolate that make up the topping and frosting.
Not only is this Mississippi mud cake incredibly moist and flavorful, it’s also super EASY to make. The cake is baked in a 9×13” pan, and even though many people feel intimidated by cakes made from scratch, this chocolate cake recipe is one of the easiest homemade cakes you will ever make.
It’s adapted from my favorite Hershey’s Perfectly Chocolate Cake recipe. Instead of buttermilk I’ve used milk and sour cream. It bakes up sturdy enough to hold it’s own and serve easily from a 9×13” pan, but the crumb of the cake is still tender and soft. It’s SO GOOD!
Consider trying some of my other favorite chocolate cakes:
- The BEST Texas Sheet Cake
- Chocolate Cake with Chocolate Mousse Filling
- Chocolate Cake with Oreo Filling
- German Chocolate Cake
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Mississippi Mud Cake
Video
Ingredients
- 2 cups all-purpose flour
- 1 1/2 cups granulated sugar
- 1/2 cup light brown sugar , packed
- 3/4 cup unsweetened cocoa powder
- 2 teaspoons baking powder
- 1 1/2 teaspoons baking soda
- 3/4 teaspoon salt
- 3/4 cup oil , canola or vegetable
- 2 eggs
- 1 teaspoon vanilla extract
- 6 Tablespoons milk
- 1/3 cup sour cream
- 1 cup boiling water
For topping:
- 10.5 ounce package mini marshmallows
- 1/2 cup butter (1 stick)
- 6 Tablespoons milk
- 3 heaping Tablespoons unsweetened cocoa powder
- 1 teaspoon vanilla extract
- 3 cups powdered sugar
Instructions
- Preheat oven to 350 degrees F. Lightly grease a 9x13'' baking pan.
- In a large mixing bowl combine the flour, sugars, cocoa powder, baking powder, baking soda and salt.
- Add oil, eggs, vanilla, milk and sour cream and mix until combined. Reduce speed and carefully pour in the boiling water. Beat on high speed for 1 minute to add air to the batter.
- Pour batter into prepared pan. Bake for 28-33 minutes, or until a toothpick inserted in the center comes out clean.
- Remove cake from oven and sprinkle marshmallows all over the top of the hot cake, completely covering it.
- Return to oven (at 350 degrees F) for 2-3 minutes or until the marshmallows are just slightly puffed and melted.
- Allow cake to cool completely before drizzling frosting on top.
For the frosting:
- Melt butter in a small saucepan over medium-high heat.
- Add milk and cocoa powder and whisk well. Cook for about 2-3 more minutes, stirring constantly.
- Remove from heat and stir in vanilla and powdered sugar. Use an electric mixer to make the frosting smooth.
- Drizzle warm frosting immediately over cake. Refrigerate cake for about 30 minutes or until frosting has set. Store at room temperature.
- Next time try Mississippi Mud Brownies!
Nutrition
Have you tried this recipe?!
RATE and COMMENT below! I would love to hear your experience.
I originally shared this post September 2015. Updated June 2018.
Annie McClellan says
It was delicious. Everyone loved it!
Janet says
Loved this cake, especially on the 2nd and 3rd day. This is definitely one I will make again. I’m going to try the brownies next!
Rebecca says
Can I replace the cocoa with nestle quick?
Lauren Allen says
No, I would not do that.
Senthil Muthiah says
Can you make cupcakes using this recipe? I would really love to.
Lauren Allen says
yes. I have not tested this to tell you exact baking time. I would start with 10 minutes.
Judy says
Made this for a family get together and everyone loved it! I’ve had it before made by my aunt but love this recipe even better. It was loved by everyone but especially by my five year old boy. 🙂 thank you
diane says
I made this cake for my book group and it was amazing! You don’t need a large piece to enjoy but the cake is so moist and the combination with the marshmallows is divine. I wasn’t sure everyone would eat a cake topped with marshmallows but they really enjoyed it! I would make the cake even my itself, it was so moist. Thanks for sharing the recipe!