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Mississippi Mud Brownies That Melt in Your Mouth Recipe

5 from 116 reviews

These Mississippi Mud Brownies deliver a rich, fudgy chocolate experience with a gooey marshmallow layer and a creamy cocoa frosting that melts in your mouth. Perfectly moist and decadent, these brownies are an irresistible dessert for chocolate lovers.

Ingredients

Scale

Brownie Batter

  • 1 cup unsweetened cocoa powder
  • 1/2 cup oil
  • 1/2 cup unsalted butter, softened
  • 1 cup granulated sugar
  • 4 large eggs
  • 1 teaspoon vanilla extract
  • 1 cup all-purpose flour
  • 1/2 teaspoon salt

Topping and Frosting

  • 2 cups mini marshmallows
  • 1/2 cup melted butter
  • 1/4 cup unsweetened cocoa powder
  • 1/4 cup evaporated milk
  • 1 teaspoon vanilla extract
  • 3 cups powdered sugar

Instructions

  1. Preheat and prepare pan: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan with non-stick cooking spray to ensure the brownies do not stick.
  2. Mix cocoa and oil: In a large mixing bowl, whisk together the oil and 1 cup of unsweetened cocoa powder until the mixture is smooth and uniform in texture.
  3. Add butter and sugar: Add the softened butter to the cocoa-oil mix and blend until creamy. Then stir in the granulated sugar thoroughly to combine.
  4. Incorporate eggs and vanilla: Add the eggs one at a time, mixing well after each addition to maintain a smooth batter. Stir in the vanilla extract to enhance the chocolate flavor.
  5. Add dry ingredients: Gently fold in the all-purpose flour and salt, being careful not to overmix to keep the brownies tender.
  6. Bake the brownies: Pour the batter evenly into the prepared baking pan and bake in the preheated oven for 25-30 minutes, or until a toothpick inserted near the center comes out with a few moist crumbs.
  7. Add marshmallows: Remove the brownies from the oven and evenly sprinkle the 2 cups of mini marshmallows on top. Return the pan to the oven for an additional 2-3 minutes, until the marshmallows are soft and slightly melted.
  8. Cool completely: Let the brownies cool completely in the pan on a wire rack before frosting.
  9. Prepare frosting: In a separate bowl, combine the melted butter, 1/4 cup cocoa powder, evaporated milk, and 2 cups of powdered sugar. Mix until smooth.
  10. Adjust frosting consistency: Gradually add the remaining powdered sugar (about 1 cup more) until the frosting reaches a spreadable consistency.
  11. Frost the brownies: Spread the frosting evenly over the cooled brownies.
  12. Serve: Cut the brownies into squares and serve. Enjoy the rich, gooey chocolate goodness!

Notes

  • Do not overmix the batter after adding flour to avoid tough brownies.
  • Use unsalted butter for better control over saltiness in the final product.
  • Ensure brownies are completely cooled before frosting to prevent melting the frosting.
  • Store brownies in an airtight container to keep them fresh for up to 3 days.
  • Mini marshmallows create the gooey top, but regular marshmallows can be chopped and used if mini size is unavailable.

Keywords: Mississippi Mud Brownies, fudgy brownies, chocolate brownies recipe, marshmallow brownies, homemade brownies, chocolate frosting