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Mississippi mud brownies on a cooling rack.

Mississippi Mud Brownies

Fudgy brownie bottom with a drizzly marshmallow top, this dessert is tasty warmed up as well as chilled. Impressive to look at and even better to eat, these chewy Mississippi mud brownies take about one hour to make.
Prep Time 30 minutes
Cook Time 50 minutes
Serving Size 15 servings

Equipment

  • Stand mixer
  • Whisk attachment for mixer
  • Paddle attachment for mixer
  • Spatula
  • 1 13x 9 inch pan

Ingredients

For The Brownies

  • 1 cup butter at room temperature
  • 2 cups sugar
  • 4 large eggs at room temperature
  • 4 1 ounce unsweetened baking chocolate squares
  • 1 cup all-purpose flour
  • 1 teaspoon vanilla extract
  • 1 ½ cups semisweet chocolate chips

For The Mississippi Mud Topping

  • 6 cups marshmallows
  • Cornstarch as needed
  • 1 ½ cups melting chocolate or almond bark

Instructions

  • Preheat the oven to 350 degrees Fahrenheit. In a stand mixer, beat the room temperature butter and sugar together until blended. Add the eggs, one at a time, just until blended, being careful not to overmix.
  • Melt the baking chocolate in the microwave at 50% power. Stir every 30 seconds until melted. Add the melted chocolate to the butter-sugar mixture and mix just until blended.
  • Add the flour and mix on low until blended. Using a wooden spoon or silicone spatula, stir in the vanilla extract and chocolate chips.
  • Spread the brownie batter into a greased 13 inch x 9 inch pan and bake at 350 degrees Fahrenheit for 35-40 minutes or until you can poke a toothpick through the center and it comes out clean.
  • Take the brownies out of the oven. Dust a light sprinkling of corn starch over the brownies. Then spread 1 ½ cups of miniature marshmallows over the top. Place the brownies back in the oven for 10 minutes or until marshmallows have slightly browned on the top.
  • Pull the brownies out of the oven and let them cool completely before drizzling chocolate over them.
  • In a microwave, heat the melting chocolate until it is a liquid. Using a spoon, drizzle the melted chocolate over the Mississippi mud brownies in several directions. Allow the chocolate to cool completely before cutting the brownies.
  • Enjoy your Mississippi mud brownies at room temperature or warmed up!