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Southern Mississippi Mud Cake
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5 from 2 votes

Mississippi Mud Cake

Mississippi Mud Cake is one of my favorite southern sheet cakes. It's a rich and moist chocolate cake covered with gooey marshmallows, crunchy pecans, and a fudge icicng. Dessert doesn't get any better than this.
Course Dessert
Cuisine Southern
Keyword Sheet Cake
Prep Time 15 minutes
Cook Time 32 minutes
Servings 16
Calories 519kcal

Ingredients

Batter

  • 2 cups all-purpose flour
  • 1 1/2 cups granulated sugar
  • 1/2 cup packed light brown sugar
  • 3/4 cup unsweetened cocoa powder
  • 2 teaspoons baking powder
  • 1 1/2 teaspoons baking soda
  • 3/4 teapsoon salt
  • 3/4 cup vegetable oil
  • 2 large eggs
  • 1 1/2 teapsoons vanilla extract
  • 6 tablespoons whole milk
  • 1/3 cup sour cream
  • 1 cup boiling water
  • 2 1/2 cups mini marshmallows

Icing

  • 1/2 cup butter
  • 1/3 cup unsweetened cocoa powder
  • 1/3 cup milk
  • 4 cups powdered sugar
  • 1/2 teaspoon vanilla extract
  • 1 cup chopped toasted pecans

Instructions

  • Preheat oven to 350 degrees and spray a 9x13-inch pan with baking spray.
  • Whisk together flour, granulated sugar, brown sugar, cocoa powder, baking powder, baking soda, and salt in a large mixing bowl.
  • Add oil, eggs, vanilla extract, whole milk, and sour cream. Use a hand-held mixer to mix until combined.
  • Add boiling water and beat on high for 1 minute.
    Pour batter into prepared pan. Bake for 30 minutes or until the top feels firm when you gently press down on top.
  • Sprinkle marshmallows on top. Return to oven for 2 minutes. Let cake cool.
  • To make icing, combine butter, cocoa powder, and milk in a large saucepan. Heat over medium heat until butter is melted. Stir and cook for 1 minute.
  • Whisk in powdered sugar 1 cup at a time. Whisk in vanilla extract.
  • Slowly pour icing over cooled cake. Sprinkle with pecans.
  • Cut into squares and serve.

Nutrition

Calories: 519kcal | Carbohydrates: 79g | Protein: 5g | Fat: 23g | Saturated Fat: 14g | Cholesterol: 45mg | Sodium: 253mg | Potassium: 171mg | Fiber: 3g | Sugar: 60g | Vitamin A: 266IU | Vitamin C: 1mg | Calcium: 72mg | Iron: 2mg