★★★★★

Mississippi Mud Cake

Mississippi Mud Cake is a delicious combination of moist chocolate cake, creamy frosting, and melted marshmallows! Learn how to make the best ever Mississippi Mud Cake from scratch with this easy recipe.

Chocolate and marshmallows are one of my all time favorite dessert combos. From S’mores Cookies to Rocky Road Fudge this is one flavor pair I’ll never pass up.

Slice of chocolate cake with marshmallow and chocolate frosting on a white plate.

What is Mississippi Mud Cake

Mississippi Mud Cake is a classic chocolate sheet cake with southern origins.

It’s made by layering:

  • Homemade chocolate cake
  • Melted marshmallow topping
  • Pour a warm chocolate frosting over the whole thing and dig into unbelievable chocolate decadence!

This recipe is Mississippi Mud Cake just like Grandma used to make. Keep the southern theme by serving this for dessert after a dinner of Mississippi Pot Roast and Corn Casserole.

Even if you’re not southern, you’re going to love this recipe. It’s basically a chocolate lover’s paradise. And easier to make than you might think!

If you love today’s cake, be sure to try our marshmallow brownies. Same concept, but instead of cake we swapped it out with our favorite brownie recipe.

Ingredient Notes

Ingredients needed to make mississippi mud cake.

Making today’s recipe is simple enough with ingredients you may already have in your pantry. Be sure to scroll down all the way to the recipe card for a complete list with exact measurements.

  • Hot brewed coffee. No, it won’t make your cake taste like coffee! This is my secret ingredient for chocolate cakes with the richest chocolate flavor. The bitter coffee adds amazing depth to the cocoa.
  • Butter. Be sure to choose unsalted butter when baking.
  • Eggs. Help the cake batter stay moist and combine the dry ingredients.
  • Unsweetened Cocoa Powder. Be sure to choose unsweetened, and don’t use Dutch Processed in today’s recipe!
  • Mini marshmallows. You’ll need a full 10 ounce bag for the melted marshmallow topping on this Mississippi Mud Cake.

Easy Instructions

Step by step photos showing how to make mississippi mud cake.
  1. Make the chocolate cake batter. Feel free to swap this out with a devils food chocolate cake mix if you prefer. However, if you are wanting the best, you’ve got to try our homemade cake at least once!
  2. Marshmallow layer. While the cake is warm, add the marshmallows and return to the oven for another 3 minutes to melt the marshmallows. (It’s okay if they’re not fully melted here!). Let the cake cool completely while you prepare the frosting.
  3. Chocolate frosting. Pour the warm frosting over the cooled cake.
  4. Chill. Chill the Mississippi Mud Cake for at least 1 hour before serving. It’s delicious served cold straight from the fridge!
Slice of chocolate cake being lifted out of baking dish.

Tips and Tricks

  • How to prevent cake from sticking. Spray the baking pan with baking spray OR use my Homemade Cake Release.
  • Keep covered. Add a layer of plastic wrap over the cake pan while Mississippi Mud Cake chills. This keeps everything moist and prevents the frosting from getting dry and crackly.
  • Marshmallows. If you prefer your marshmallows lumpy, you can skip the melting of marshmallows and just pour the chocolate frosting over the top. You’ll have a “bumpy” appearance that tastes delicious.
  • Optional toppings. Add more mini marshmallows or chipped pecans to Mississippi Mud Cake before serving for an extra touch.
  • Storing. I recommend storing this cake in the refrigerator. If you prefer to serve it room temperature, remove from the fridge about 30 minutes before serving.
Slice of mississippi mud cake on white plate with fork.

Recipe FAQs

Why did my mud cake crack on top?

If your frosting layer is cracking while the Mississippi Mud Cake chills, you may have forgotten to cover the pan tightly with plastic wrap while refrigerating.

Can I make these with regular marshmallows instead of mini?

Yes, just chop them into smaller pieces first so they soften and melt at the same rate.

What kind of pan do I need for Mississippi Mud Cake?

I use a 9 x 13 baking pan for this recipe and most of my sheet cakes. Works like a charm every time.

More Easy Cake Recipes

Yield: 24 pieces

Mississippi Mud Cake Recipe

Prep Time 20 minutes
Cook Time 30 minutes
Chill Time 1 hour
Total Time 50 minutes

Mississippi Mud Cake is a delicious combination of moist chocolate cake, creamy frosting, and melted marshmallows! Learn how to make the best ever Mississippi Mud Cake from scratch with this easy recipe.

Ingredients

For the Cake

  • ½ cup unsalted butter, room temperature
  • 1 ½ cup granulated sugar
  • 2 large eggs
  • 1 ½ cup all-purpose flour
  • ½ cup unsweetened cocoa powder
  • ½ teaspoon kosher salt
  • 1 teaspoon baking soda
  • ½ teaspoon baking powder
  • ½ cup brewed hot coffee
  • ½ cup whole milk

For the Topping

  • 4 cups (10 ounce bag) mini marshmallows
  • ½ cup unsalted butter
  • ½ cup whole milk
  • ¼ cup unsweetened cocoa powder
  • 4 cups powdered sugar

Instructions

  1. Preheat oven to 350 degrees F. Spray 13x9 baking dish with baking spray (or use homemade cake release). Set aside.
  2. In a bowl, mix flour, cocoa, salt, baking soda and baking powder. Set aside.
  3. In a measuring cup, mix together hot coffee and milk. Set aside.
  4. In mixer, beat butter and sugar for 5 minutes, until smooth. Beat in eggs one at a time. Slowly add in dry ingredients alternating with the coffee/milk mixture (about 3 additions of each).
  5. Pour cake batter into prepared pan. Bake for about 28-30 minutes, until toothpick inserted in the center comes out clean. Remove from oven and sprinkle with marshmallows. Return to oven for an additional 3-4 minutes.
  6. Remove from oven and cool completely before adding frosting.
  7. For the Frosting, in a small saucepan, melt butter over medium high heat. Add milk and cocoa powder, and whisk together.
  8. Over medium high heat, continue to cook until mixture begins to bubble (about 3 minutes). Remove from heat.
  9. In a mixing bowl (or if your saucepan is big enough), add the powdered sugar. Beat until smooth. Drizzle the warm frosting over the marshmallow layer of the cooled cake.
  10. Chill cake in refrigeratore for at least 1 hour or until ready to serve. ENJOY.

Notes

  • How to prevent cake from sticking. Spray the baking pan with baking spray OR use my Homemade Cake Release.
  • Keep covered. Add a layer of plastic wrap over the cake pan while Mississippi Mud Cake chills. This keeps everything moist and prevents the frosting from getting dry and crackly.
  • Marshmallows. If you prefer your marshmallows lumpy, you can skip the melting of marshmallows and just pour the chocolate frosting over the top. You'll have a "bumpy" appearance that tastes delicious.
  • Optional toppings. Add more mini marshmallows or chipped pecans to Mississippi Mud Cake before serving for an extra touch.
  • Storing. I recommend storing this cake in the refrigerator. If you prefer to serve it room temperature, remove from the fridge about 30 minutes before serving.
  • See blog post for more recipe tips and tricks.
  • Nutrition Information:

    Yield:

    24

    Serving Size:

    1

    Amount Per Serving: Calories: 242Total Fat: 9gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 37mgSodium: 102mgCarbohydrates: 40gFiber: 1gSugar: 32gProtein: 2g

    *Nutrition facts are an estimate and not guaranteed to be accurate. Please see a registered dietitian for special diet advice.

    Did you make this recipe?

    Please leave a comment on the blog or share a photo on Instagram

    Fudgey chocolate + gooey marshmallows + frosting. Need I say more? Mississippi Mud Cake proves that the best classic desserts never go out of style!

    About Aimee

    Aimee is a dessert lover (specifically rice krispie treats), workout enthusiast, self-taught foodie, and recipe creator.

    Learn more about Aimee.

    Affiliate Disclosure:**There may be affiliate links in this post! By clicking on them, or purchasing recommended items I may receive a small compensation. However, I only recommend products I love! Thank you for supporting Shugary Sweets! See my disclosure policy for more info**

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    Posted on May 9, 2022

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