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Mississippi Mud Brownies That Melt in Your Mouth Recipe

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4.9 from 91 reviews

These Mississippi Mud Brownies are rich, fudgy, and melt in your mouth with a luscious chocolate frosting and gooey marshmallow layer. Perfect for chocolate lovers seeking a decadent treat with a moist texture and irresistible flavor.

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 Oven and Prepare Pan: Preheat your oven to 350°F (175°C) and grease a 9×13 inch baking pan thoroughly with non-stick cooking spray to ensure easy removal of the brownies.
  2. Mix Cocoa and Oil: In a large mixing bowl, whisk together the unsweetened cocoa powder and oil until the mixture is smooth and evenly combined, forming the chocolate base of the brownies.
  3. Add Butter and Sugar: Add the softened unsalted butter to the cocoa and oil mixture and blend until creamy. Next, mix in the granulated sugar to sweeten and help form a crust on the brownies.
  4. Incorporate Eggs and Vanilla: Add the eggs one at a time to the mixture, beating well after each addition to ensure a smooth batter. Stir in the vanilla extract to deepen the chocolate flavor.
  5. Combine Flour and Salt: Gently fold in the all-purpose flour and salt, mixing carefully to avoid overmixing, which can make the brownies tough.
  6. Bake the Brownies: Pour the batter evenly into your prepared pan. Place in the oven and bake for 25 to 30 minutes until a toothpick inserted near the center comes out with moist crumbs but not wet batter.
  7. Add Marshmallows: Remove the brownies from the oven and immediately sprinkle the mini marshmallows evenly over the top. Return the pan to the oven and bake for an additional 2 to 3 minutes, just until the marshmallows are soft and gooey.
  8. Cool Completely: Remove the pan from the oven and let the brownies cool completely in the pan to set before frosting.
  9. Prepare the Frosting: In a medium bowl, combine the melted butter, unsweetened cocoa powder, evaporated milk, and 2 cups of powdered sugar. Mix well until smooth and creamy.
  10. Adjust Frosting Consistency: Gradually add the remaining powdered sugar a little at a time until you achieve your desired thickness and spreadability for the frosting.
  11. Frost and Serve: Spread the prepared frosting evenly over the cooled brownies. Cut into squares and serve for a rich, decadent treat.

Notes

  • Do not overmix the batter to ensure the brownies stay tender and fudgy.
  • Be sure to cool the brownies completely before frosting to prevent melting the frosting.
  • Use unsalted butter to control the salt level in the brownies and frosting.
  • For a more intense chocolate flavor, you can substitute half of the all-purpose flour with almond flour.
  • Store brownies in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.

Keywords: Mississippi Mud Brownies, chocolate brownies, gooey brownies, marshmallow brownies, chocolate frosting, easy brownie recipe

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