Ultimate Mississippi Mud Brownies That Melt in Your Mouth Recipe

ByElla Hart
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Introduction

These Ultimate Mississippi Mud Brownies are rich, fudgy, and topped with gooey marshmallows and a creamy chocolate frosting. They melt in your mouth and make the perfect indulgent treat for any occasion.

A close-up of a three-layer chocolate dessert square on a wooden surface with a drop of melted chocolate in front. The bottom layer is dark, moist chocolate cake with a dense texture. The middle layer consists of creamy chocolate mousse, lighter brown and smooth. The top layer is thick, white whipped cream garnished with chunky, curled dark chocolate shavings. The background shows blurred similar dessert pieces on a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Ingredients

  • 1 cup unsweetened cocoa powder
  • 1/2 cup oil
  • 1/2 cup butter, softened
  • 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
  • 1/4 cup evaporated milk
  • 1 teaspoon vanilla extract
  • 3 cups powdered sugar

Instructions

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

Tips & Variations

  • For an extra fudgy texture, substitute half the oil with melted butter.
  • Try adding chopped nuts or chocolate chips to the batter for added crunch.
  • Use regular-sized marshmallows if mini ones are unavailable; just reduce the topping time slightly to prevent burning.
  • If you prefer a less sweet frosting, reduce the powdered sugar gradually and taste as you go.

Storage

Store the brownies in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate for up to a week or freeze for up to 3 months. Reheat briefly in the microwave to soften the frosting before serving.

How to Serve

A close-up of a three-layer chocolate dessert slice on a wooden board with a drop of chocolate sauce in front. The bottom layer is dark, moist, and dense chocolate cake with a slightly rough texture. The middle layer is a lighter, creamy chocolate mousse with a smooth and fluffy texture. The top layer is thick white cream, soft and airy, covered with large dark chocolate curls curling around the edges. The background is a white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Serve this delicious recipe with your favorite sides.

FAQs

Can I use salted butter instead of unsalted?

Yes, but reduce or omit the added salt in the recipe to avoid an overly salty taste.

How do I know when the brownies are done baking?

Insert a toothpick into the center; it should come out with a few moist crumbs but not wet batter. Avoid overbaking to keep them fudgy.

Print
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Ultimate Mississippi Mud Brownies That Melt in Your Mouth Recipe

★★★★★

4.6 from 108 reviews
  • Author: Ella
  • Total Time: 45 minutes
  • Yield: 12 servings 1x
Print Recipe

Description

These Ultimate Mississippi Mud Brownies are rich, fudgy, and melt in your mouth with layers of deep chocolate flavor, gooey marshmallows, and creamy cocoa frosting. Perfect for chocolate lovers looking for a decadent homemade treat with a soft, moist texture and a luscious finish.

Ingredients

Scale

Brownie Batter

  • 1 cup unsweetened cocoa powder
  • 1/2 cup oil
  • 1/2 cup butter, softened (unsalted recommended)
  • 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 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 prevent sticking.
  2. Mix Cocoa and Oil: In a large mixing bowl, whisk together the oil and 1 cup unsweetened cocoa powder until the mixture is smooth and well combined, ensuring no lumps of cocoa remain.
  3. Add Butter and Sugar: Add the softened butter to the cocoa-oil mixture and blend until creamy. Then stir in the granulated sugar evenly.
  4. Incorporate Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition to incorporate air and combine smoothly. Stir in the vanilla extract for enhanced flavor.
  5. Add Dry Ingredients: Gently fold in the all-purpose flour and salt, being careful not to overmix to keep the brownies tender and soft.
  6. Bake Brownies: Pour the batter evenly into the greased 9×13-inch pan and bake in the preheated oven for 25-30 minutes until a toothpick inserted near the center comes out with moist crumbs.
  7. Add Marshmallows: Remove the brownies from the oven and evenly sprinkle 2 cups of mini marshmallows on top. Return the pan to the oven for an additional 2-3 minutes, just until marshmallows are slightly melted and gooey.
  8. Cool Completely: Remove the brownies from the oven again and allow them to cool completely in the pan at room temperature. This step helps the brownies set for easier frosting application.
  9. Prepare Frosting: In a separate mixing bowl, combine melted butter, 1/4 cup cocoa powder, evaporated milk, and 2 cups powdered sugar. Mix thoroughly until smooth and creamy.
  10. Adjust Frosting Consistency: Gradually add the remaining powdered sugar while mixing until the frosting reaches your desired thickness for spreading.
  11. Frost Brownies: Spread the frosting evenly over the cooled brownies using a spatula or knife to create a rich, chocolaty layer.
  12. Serve: Cut the brownies into squares and serve. Enjoy the gooey, decadent layers and creamy frosting.

Notes

  • Do not overmix the batter once flour is added to maintain moist brownies.
  • For extra gooey marshmallows, watch them carefully in the oven to prevent burning.
  • Use unsalted butter to better control the salt content in the recipe.
  • Allow brownies to cool completely before frosting to avoid melting the frosting.
  • Store covered at room temperature or refrigerate for up to 3 days.
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American

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

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