Go Back
A full jellyroll pan of Mississippi Mud Cake Brownies sliced into perfect squares

Southern Mississippi Mud Cake Brownies

Print Recipe Pin Recipe
Ingredients Method

Ingredients
  

  • 1 cup melted butter or 1 stick butter + 1 stick margarine
  • 2 cups granulated sugar
  • 1/2 cup unsweetened cocoa powder
  • 4 large eggs lightly beaten
  • 1 tsp vanilla extract
  • 1/8 tsp salt
  • 1 1/2 cups all-purpose flour
  • 1 1/2 cups toasted pecans coarsely chopped
  • 1 10.5 oz bag miniature marshmallows
  • Frosting: 1 16 oz pkg sifted powdered sugar, 1/2 cup milk, 1/4 cup softened butter, 1/3 cup cocoa powder

Method
 

  1. Preheat your oven to 350°F. Grease and flour a 15- x 10-inch jellyroll pan.
  2. In a large bowl, whisk together melted butter, sugar, cocoa, eggs, vanilla, and salt.
  3. Gently stir in the flour and toasted pecans until well incorporated.
  4. Pour the batter into the prepared pan and bake for 20-25 minutes.
  5. Remove from oven and immediately top the warm cake with miniature marshmallows.
  6. Return to the oven for 5 minutes.
  7. While baking, beat the frosting ingredients together with an electric mixer until smooth.
  8. Drizzle the chocolate frosting over the warm marshmallow layer.
  9. Allow the brownies to cool completely before cutting into squares.