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Mississippi Mud Cake

This Mississippi Mud Cake includes a homemade chocolate cake with melted marshmallows and warm chocolate frosting poured on top.

Prep Time
15 mins
Cook Time
15 mins
Total Time
1 hr
Servings: 12
Calories: 633 kcal
Course: Dessert
Cuisine: American

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

    Cup of Yum
  1. Preheat oven to 350 degrees F. Lightly grease a 9x13'' baking pan.
  2. In a large mixing bowl combine the flour, sugars, cocoa powder, baking powder, baking soda and salt.
  3. 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.
  4. Pour batter into prepared pan. Bake for 38-45 minutes, or until a toothpick inserted in the center comes out clean.
  5. Remove cake from oven and sprinkle marshmallows all over the top of the hot cake, completely covering it. 
  6. Return to oven (at 350 degrees F) for 3-5 minutes or until the marshmallows are just slightly puffed and melted. 
  7. Allow cake to cool completely before drizzling frosting on top.
For the frosting:
    Cup of Yum
  1. Melt butter in a small saucepan over medium-high heat. 
  2. Add milk and cocoa powder and whisk well. Cook for about 2-3 more minutes, stirring constantly. 
  3. Remove from heat and stir in vanilla and powdered sugar. Use an electric mixer to make the frosting smooth.
  4. Drizzle warm frosting immediately over cake. Refrigerate cake for about 30 minutes or until frosting has set. Store at room temperature.
  5. Next time try Mississippi Mud Brownies!

Notes

  • Make Ahead and Freezing Instructions: The cake can be made 1-2 days in advance, stored covered at room temperature or in the refrigerator. The baked and frosted cake can be frozen for up to 3 months.

Nutrition Information

Calories 633kcal (32%) Carbohydrates 104g (35%) Protein 5g (10%) Fat 23g (35%) Saturated Fat 6g (30%) Cholesterol 49mg (16%) Sodium 394mg (16%) Potassium 224mg (6%) Fiber 2g (8%) Sugar 78g (156%) Vitamin A 300IU (6%) Calcium 75mg (8%) Iron 2.1mg (12%)

Nutrition Facts

Serving: 12Serving

Amount Per Serving

Calories 633

% Daily Value*

Calories 633kcal 32%
Carbohydrates 104g 35%
Protein 5g 10%
Fat 23g 35%
Saturated Fat 6g 30%
Cholesterol 49mg 16%
Sodium 394mg 16%
Potassium 224mg 5%
Fiber 2g 8%
Sugar 78g 156%
Vitamin A 300IU 6%
Calcium 75mg 8%
Iron 2.1mg 12%

* Percent Daily Values are based on a 2,000 calorie diet.