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Mississippi Mud Brownies That Melt in Your Mouth Recipe

5 from 87 reviews

These Mississippi Mud Brownies are incredibly rich, moist, and decadent with layers of gooey marshmallows and a creamy chocolate frosting that melts in your mouth. Perfectly balanced with deep cocoa flavor and a luscious texture, these brownies are a classic treat for chocolate lovers looking for an indulgent dessert that’s easy to make.

Ingredients

Scale

Brownie Batter

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

Topping

  • 2 cups mini marshmallows

Frosting

  • 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 pan thoroughly with non-stick cooking spray to prevent sticking.
  2. Mix Cocoa and Oil: In a large mixing bowl, whisk together the oil and cocoa powder until the mixture is smooth and evenly blended. This combines the chocolate flavor into the fat base.
  3. Add Butter and Sugar: Incorporate the softened butter into the cocoa mixture and blend until creamy, then add the granulated sugar and mix well to create a smooth, rich batter base.
  4. Incorporate Eggs and Vanilla: Add the eggs one at a time, mixing thoroughly after each addition to ensure a uniform texture, followed by stirring in the vanilla extract for enhanced flavor.
  5. Add Dry Ingredients: Gently fold in the all-purpose flour and salt, being careful not to over-mix to keep the brownies tender and prevent toughness.
  6. Bake the Brownies: Pour the batter evenly into the prepared pan and bake in the preheated oven for 25-30 minutes until set but still moist.
  7. Add Marshmallows: Remove the brownies from the oven and immediately sprinkle the mini marshmallows evenly over the top, then return to the oven for an additional 2-3 minutes to melt and create a gooey marshmallow layer.
  8. Cool the Brownies: Allow the brownies to cool completely in the pan to set and prepare for frosting application.
  9. Prepare the Frosting: In a mixing bowl, combine melted butter, cocoa powder, evaporated milk, and 2 cups of powdered sugar. Mix until smooth, then gradually add the remaining powdered sugar until you achieve your desired thick and creamy frosting consistency.
  10. Frost and Serve: Spread the prepared frosting evenly over the cooled marshmallow-topped brownies. Cut into squares and serve for a decadent dessert experience.

Notes

  • Do not overmix the batter after adding the flour to ensure moist and tender brownies.
  • Sprinkling marshmallows right after baking lets them melt slightly without burning.
  • Let the brownies cool completely before frosting to prevent frosting from melting.
  • Use unsalted butter to better control the saltiness of the dessert.
  • Store leftovers in an airtight container at room temperature for up to 3 days for best freshness.

Keywords: Mississippi mud brownies, chocolate brownies, marshmallow brownies, homemade brownies, chocolate frosting brownies, gooey brownies recipe