Introduction

These Ultimate Mississippi Mud Brownies are rich, fudgy, and melt in your mouth with every bite. Featuring a gooey marshmallow layer and a creamy chocolate frosting, they’re sure to satisfy any chocolate lover’s cravings.

Ultimate Mississippi Mud Brownies That Melt in Your Mouth Recipe - Recipe Image

Ingredients

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

Instructions

Step 1: Preheat your oven to 350°F and grease a 9×13-inch pan with non-stick cooking spray.
Step 2: In a large mixing bowl, whisk together the oil and cocoa powder until smooth.
Step 3: Add the softened butter and blend until creamy, then mix in the granulated sugar.
Step 4: Add eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
Step 5: Gently fold in the flour and salt, being careful not to overmix.
Step 6: Pour the batter into the prepared pan and bake for 25 to 30 minutes.
Step 7: Remove from oven, sprinkle the mini marshmallows evenly on top, and return to the oven for 2 to 3 minutes until marshmallows are soft and slightly melted.
Step 8: Let the brownies cool completely in the pan.
Step 9: For the frosting, mix melted butter, cocoa powder, evaporated milk, and 2 cups of powdered sugar until smooth.
Step 10: Gradually add remaining powdered sugar until you reach your desired frosting thickness.
Step 11: Spread the frosting evenly over the cooled brownies, cut into squares, and serve.

Tips & Variations

For extra gooey brownies, slightly underbake before adding marshmallows on top.
Substitute mini marshmallows with chopped chocolate for a different texture.
Use salted butter if you want a slightly saltier contrast to the sweet chocolate.
Try adding a pinch of espresso powder to enhance the chocolate flavor.

Storage

Store brownies in an airtight container at room temperature for up to 3 days. For longer storage, keep them refrigerated for up to a week. To enjoy them warm, reheat individual portions briefly in the microwave.

How to Serve

Serve this delicious recipe with your favorite sides.

FAQs

Can I use regular milk instead of evaporated milk for the frosting?

Yes, you can substitute regular milk, but frosting may be slightly less rich and creamy. Adjust powdered sugar to achieve the right consistency.

How do I prevent the marshmallows from burning?

Keep a close eye during the final 2-3 minutes of baking and remove as soon as marshmallows soften and turn light golden. Avoid longer baking to prevent burning.

Ultimate Mississippi Mud Brownies That Melt in Your Mouth Recipe

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★★★★★

4.9 from 441 reviews

These Ultimate Mississippi Mud Brownies are rich, fudgy, and melt in your mouth with layers of chocolate goodness. Featuring a deep chocolate batter, gooey marshmallow topping, and creamy cocoa frosting, they offer the perfect balance of textures and sweetness for any chocolate lover.

Author: Cleo
Prep Time: 15 minutes
Cook Time: 30-33 minutes
Total Time: 45-48 minutes
Yield: 12 servings 1x
Category: Dessert
Method: Baking
Cuisine: American

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

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

Preheat Oven: Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking pan thoroughly with non-stick cooking spray to prevent sticking.
Combine 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 evenly combined.
Add Butter and Sugar: Add the softened butter to the cocoa mixture and blend until creamy. Then stir in the granulated sugar until well incorporated.
Incorporate Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition to ensure a smooth batter. Stir in the vanilla extract for enhanced flavor.
Mix in Dry Ingredients: Gently fold the all-purpose flour and salt into the batter. Take care not to overmix to maintain a tender crumb.
Bake the Brownies: Pour the batter into the prepared pan and bake in the preheated oven for 25 to 30 minutes, or until the edges are set and a toothpick inserted near the center comes out with moist crumbs.
Add Marshmallow Topping: Remove the brownies from the oven and evenly sprinkle the 2 cups of mini marshmallows over the top. Return to the oven and bake for an additional 2 to 3 minutes until marshmallows are puffed and slightly golden.
Cool Brownies: Let the brownies cool completely in the pan on a wire rack to allow the marshmallow topping to set properly.
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 and creamy, adding the remaining powdered sugar gradually to reach your desired frosting consistency. Stir in 1 teaspoon vanilla extract.
Frost and Serve: Spread the frosting evenly over the cooled brownies. Once frosted, cut into squares and serve for a delightfully rich and gooey treat.

Notes

Do not overmix the batter after adding flour to keep brownies tender.
Using unsalted butter allows better control of salt content in the recipe.
Allow brownies to cool fully before frosting to prevent frosting from melting.
For extra fudgy brownies, consider lining the pan with parchment paper for easy removal.
Store leftovers in an airtight container at room temperature for up to 3 days or in the refrigerator for up to a week.

Keywords: Mississippi Mud Brownies, chocolate brownies, gooey brownies, marshmallow brownies, chocolate dessert, fudgy brownies, homemade brownies