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Easy Mississippi Mud Cake Recipe (with boxed cake mix)

Make a delicious chocolate treat with this Easy Mississippi Mud Cake recipe. Perfect for chocolate lovers and gatherings with family and friends.
Prep Time10 minutes
Cook Time28 minutes
Cooling Time1 hour
Total Time1 hour 38 minutes
Course: Dessert
Cuisine: American
Keyword: chocolate cake, mississippi mud cake
Servings: 16 servings
Calories: 392kcal
Author: Mindy Boyd

Ingredients

Cake

  • 1 chocolate cake mix
  • 4 eggs
  • 1 cup milk
  • 1/2 cup butter melted and cooled
  • 1 bag mini marshmallows 10 oz
  • non-stick cooking spray

Icing

  • 3 cups powdered sugar
  • 3 tbsp cocoa powder
  • 1/2 cup butter melted
  • 5 tbsp milk
  • 1 tsp vanilla

Instructions

  • Preheat oven to 350° and coat a 9" X 13" pan with nonstick cooking spray.
    non-stick cooking spray
  • In a large bowl mix cake mix, eggs, milk and melted butter together with a whisk or large spoon.
    1 chocolate cake mix, 4 eggs, 1 cup milk, 1/2 cup butter
  • Pour batter into pan and bake 28-33 minutes or until a toothpick inserted into the center comes out clean.
  • Sprinkle marshmallows onto the hot cake in an even layer, put back in the oven and bake until the marshmallows just start to brown, about 3-5 minutes. This time may vary so watch them closely so they don't burn.
    1 bag mini marshmallows
  • Let cool completely. 
  • Melt butter, put it and all other frosting ingredients into a large bowl and mixing with a whisk or large spoon.
    3 cups powdered sugar, 3 tbsp cocoa powder, 1/2 cup butter, 5 tbsp milk, 1 tsp vanilla
  • Pour the warm icing over the marshmallows and spread into an even layer using a spatula or the back of a large spoon. For best results cool completely so the icing sets up before cutting and serving. 

Notes

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Nutritional information is approximate. 
 
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Nutrition

Calories: 392kcal | Carbohydrates: 58g | Protein: 4g | Fat: 18g | Saturated Fat: 9g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 5g | Trans Fat: 0.5g | Cholesterol: 74mg | Sodium: 352mg | Potassium: 154mg | Fiber: 1g | Sugar: 44g | Vitamin A: 447IU | Calcium: 77mg | Iron: 2mg