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Mississippi Mud Cake

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A delightful chocolate cake topped with gooey marshmallows and creamy chocolate icing, perfect for gatherings and indulgent treats.

  • Author: daniel-kim
  • Prep Time: 20 minutes
  • Cook Time: 35 minutes
  • Total Time: 55 minutes
  • Yield: 12 servings 1x
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Ingredients

Scale
  • 2¼ cups all-purpose flour
  • ¾ cup unsweetened cocoa powder
  • 2 teaspoons baking powder
  • ¾ teaspoon salt
  • ½ teaspoon baking soda
  • 2 cups granulated sugar
  • 1 cup vegetable oil
  • ¾ cup whole milk
  • 4 large eggs
  • 1 teaspoon vanilla extract
  • 1 (10-ounce bag) mini marshmallows
  • 1 cup chopped pecans
  • ½ cup unsalted butter
  • 3 tablespoons unsweetened cocoa powder
  • 5 tablespoons whole milk
  • 3 cups confectioners’ sugar
  • 1 teaspoon vanilla extract

Instructions

  1. Preheat your oven to 350°F (175°C) and grease and flour a 9×13 inch baking pan.
  2. In a large bowl, sift together the flour, cocoa powder, baking powder, salt, and baking soda. Set aside.
  3. In another bowl, whisk together the sugar, vegetable oil, milk, eggs, and vanilla extract until thoroughly combined.
  4. Gradually add the dry mixture to the wet mixture, stirring gently until just combined.
  5. Pour the batter into the prepared baking pan and bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.
  6. Remove the cake from the oven and sprinkle the mini marshmallows and chopped pecans evenly on top. Allow the cake to cool in the pan.
  7. For the icing, melt the unsalted butter in a small saucepan over low heat. Stir in the cocoa powder and milk until smooth.
  8. Remove from heat and whisk in the confectioners’ sugar and vanilla extract until the icing is smooth and pourable.
  9. Once the cake has cooled and the marshmallows are softened, pour the icing over the top, spreading it evenly.
  10. Allow the cake to set for a few minutes before cutting into squares and serving.

Notes

For a richer flavor, consider using dark cocoa powder instead of regular cocoa powder. Store leftovers in an airtight container for up to 3 days.

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