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Mississippi Mud Dessert Bars

Mississippi Mud Bars

Mississippi Mud Bars start with a thin homemade brownie layer, topped with pillowy marshmallows and a rich chocolate glaze. This famous Southern dessert is perfect for any gathering!
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Prep Time: 1 hour
Cook Time: 16 minutes
Servings: 24

Ingredients

Bars

  • 1 ⅓ cups all-purpose flour
  • 1 cup granulated sugar
  • 1 cup light brown sugar
  • 1/2 cup unsweetened cocoa powder
  • 1/2 teaspoon baking soda
  • 1/2 teaspoon salt
  • 1 cup salted butter melted
  • 4 large eggs
  • 1/2 Tablespoon vanilla extract
  • 1 bag (10 ounces) mini marshmallows

Chocolate Glaze

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

Instructions

Bars

  • Preheat the oven to 350 degrees F. Line a 10x15-inch rimmed baking sheet with parchment then lightly grease with cooking spray. Set aside.
  • In a large bowl, whisk together the flour, sugar, brown sugar, cocoa, baking soda and salt. Stir in the melted butter, eggs, and vanilla. Mix just until combined (be careful not to overmix). Spread the batter evenly in the prepared pan.
  • Bake for 16 minutes or until a toothpick inserted in the center comes out clean. Be careful not to over-bake.
  • Remove from the oven, sprinkle the marshmallows evenly over the top of the brownie. Carefully place the hot pan back in the oven and bake for 2 more minutes or until the marshmallows are soft. (We’re not melting them, just softening them.) Remove from oven and allow to cool completely before glazing.

Chocolate Glaze

  • In a medium saucepan, add the milk and butter. Heat over medium heat until butter melts. Whisk in cocoa powder until combined. Remove pan from heat and whisk in the powdered sugar and vanilla. Whisk until well combined. Allow the chocolate glaze to stand just a few minutes, to cool slightly, before drizzling all over the bars. Wait until the glaze sets before cutting them. Cut into 24 bars. Serve and enjoy!
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