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Mississippi mud brownie square on a white plate and wood board
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Mississippi Mud Brownies

You'll be hard-pressed to find a brownie I like better than these Mississippi Mud Brownies! They are so fudgy, gooey, and absolutely delish. 
Course Dessert
Cuisine American
Keyword Mississippi Mud Brownies
Prep Time 20 minutes
Cook Time 45 minutes
Total Time 1 hour 5 minutes
Servings 24 brownies
Calories 296kcal

Ingredients

For the Brownies

  • 1 ½ cups all-purpose flour
  • 2 cups Sugar
  • ½ cup unsweetened cocoa powder
  • 2 teaspoon baking powder
  • ½ teaspoon kosher salt
  • 1 cup melted butter 2 sticks
  • 4 eggs lightly beaten and room temperature
  • 1 tablespoon vanilla extract
  • 1 bag large marshmallows toasted coconut covered highly recommended

For the Frosting

  • ½ cup melted butter
  • cup unsweetened cocoa powder
  • cup evaporated milk
  • 1 pound powdered sugar
  • 1 teaspoon vanilla
  • ½ teaspoon coconut extract only add if you’re using the coconut mallows or want it coco-nutty

Instructions

  • Pre-heat oven to 350 and lightly grease a 9×13" pan. 
  • Combine flour, sugar, cocoa powder, baking powder, and salt in a medium bowl. Add the melted butter, whisked eggs, and vanilla. Using a whisk, stir until mixture is combined and no dry lumps remain.
  • Spread batter in 9×13" pan and bake for 30-40 minutes. Cooking time will vary based on altitude so start checking at 25 minutes. Brownies are done when a toothpick inserted into the center of the pan comes out clean and moist.
  • When brownies are done, remove from oven and place the marshmallows in a single layer on top. Return to the oven for 3-4 minutes or until the marshmallows are puffed and starting to turn light golden. Remove from oven and cool completely.
  • While brownies are cooling, beat together the frosting ingredients on high until light and fluffy. Spread over the cooled brownies and cut into squares. Makes about 24 brownies.

Nutrition

Serving: 1brownie | Calories: 296kcal | Carbohydrates: 44g | Protein: 2g | Fat: 12g | Saturated Fat: 7g | Cholesterol: 58mg | Sodium: 166mg | Potassium: 110mg | Fiber: 1g | Sugar: 36g | Vitamin A: 405IU | Vitamin C: 0.1mg | Calcium: 36mg | Iron: 1mg