Mississippi Mud Brownies
If you’re on the hunt for a dessert that perfectly combines rich chocolate flavor with a gooey, marshmallowy topping, look no further than Mississippi Mud Brownies. These decadent treats are a crowd-pleaser for all occasions, from casual family dinners to festive gatherings. With a fudgy brownie base topped with a luscious layer of melted marshmallows and a sweet chocolate frosting, these brownies are sure to steal the show. Let’s dive into why this recipe is beloved by so many and how you can easily make it yourself!
Why Cooks Rave About It

Mississippi Mud Brownies are not just any ordinary dessert; they hold a special place in the hearts of many for several reasons:
– **Irresistible Flavor**: The combination of chocolate and marshmallows creates a flavor explosion that satisfies even the most intense sweet cravings.
– **Textural Delight**: Each bite offers a perfect balance of fudgy brownies, soft marshmallows, and a creamy frosting that keeps you coming back for more.
– **Easy to Make**: With simple ingredients and straightforward steps, anyone can whip up a batch, making it ideal for novice bakers.
– **Customizable**: This recipe lends itself well to variations, whether you want to add nuts, swap out the chocolate, or incorporate your favorite toppings.
The Essentials
To create these mouthwatering Mississippi Mud Brownies, you’ll need the following ingredients:
- 1/3 cup unsweetened cocoa powder
- 1/2 cup vegetable or canola oil
- 1/2 cup softened butter
- 2 cups granulated sugar
- 4 large eggs
- 2 teaspoons vanilla extract
- 1 1/2 cups all-purpose flour
- 1 teaspoon salt
- 3 cups mini marshmallows
- 1/2 cup melted butter (for frosting)
- 1/3 cup unsweetened cocoa powder (for frosting)
- 1/3 cup evaporated milk
- 1 teaspoon vanilla extract (for frosting)
- 3 1/2 cups powdered sugar
Toolbox for This Recipe
Before you get started, gather these essential tools:
- Mixing Bowls: You’ll need at least two bowls for mixing the brownie batter and the frosting.
- Whisk or Electric Mixer: For smooth and well-combined ingredients.
- Spatula: Great for folding in ingredients and spreading the frosting.
- 9×13-inch Baking Pan: The perfect size for baking these brownies.
- Parchment Paper: Optional, but helps with easy cleanup and removal of the brownies.
- Oven Mitts: Safety first when handling hot pans!
Mississippi Mud Brownies, Made Easy

Follow these simple steps to create your own batch of Mississippi Mud Brownies:
Step 1: Preheat Your Oven
Preheat your oven to 350°F (175°C). Grease your 9×13-inch baking pan or line it with parchment paper for easy removal.
Step 2: Make the Brownie Batter
In a large mixing bowl, whisk together the 1/3 cup unsweetened cocoa powder, 1/2 cup vegetable or canola oil, and 1/2 cup softened butter until smooth.
Step 3: Add Sugar and Eggs
Stir in the 2 cups granulated sugar until well combined. Add the 4 large eggs one at a time, mixing well after each addition. Then, stir in 2 teaspoons vanilla extract.
Step 4: Incorporate Dry Ingredients
In a separate bowl, combine 1 1/2 cups all-purpose flour and 1 teaspoon salt. Gradually add this mixture to the wet ingredients, stirring until just combined.
Step 5: Bake the Brownies
Pour the brownie batter into the prepared baking pan and spread it evenly. Bake in the preheated oven for about 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
Step 6: Add the Marshmallows
Once the brownies are baked, remove them from the oven and immediately sprinkle 3 cups mini marshmallows evenly over the top. Return to the oven for an additional 5-7 minutes, or until the marshmallows are fluffy and slightly golden.
Step 7: Prepare the Frosting
While the brownies cool, whisk together the 1/2 cup melted butter, 1/3 cup cocoa powder, 1/3 cup evaporated milk, and 1 teaspoon vanilla extract. Gradually add 3 1/2 cups powdered sugar, mixing until smooth and creamy.
Step 8: Frost the Brownies
Spread the frosting over the warm marshmallow layer, allowing it to slightly melt into the marshmallows. Let the brownies cool completely before cutting into squares.
Make It Diet-Friendly

If you’re looking to modify this recipe for dietary preferences, consider the following options:
- Gluten-Free: Substitute all-purpose flour with a 1:1 gluten-free flour blend.
- Dairy-Free: Use dairy-free butter and coconut cream in place of evaporated milk.
- Reduced Sugar: Swap granulated sugar with a sugar substitute that measures cup-for-cup.
- Nut-Free: Ensure no cross-contamination by using nut-free brands for all ingredients.
Common Errors (and Fixes)
Even the most seasoned bakers can encounter issues. Here are some common mistakes and how to avoid them:
- Overbaking: Keep an eye on your brownies; they should be set but still moist in the center.
- Marshmallows Not Melting Evenly: Ensure you add the marshmallows immediately after removing from the oven for the best results.
- Frosting Too Runny: If your frosting is too thin, add more powdered sugar gradually until you reach the desired consistency.
- Brownies Sticking to the Pan: Always grease the pan or line it with parchment paper to prevent sticking.
Meal Prep & Storage Notes
To keep your Mississippi Mud Brownies fresh and delicious, consider these storage tips:
You can store the brownies in an airtight container at room temperature for up to 3 days. For longer storage, wrap them tightly in plastic wrap and refrigerate for up to a week. For freezing, cut the brownies into squares and place them in an airtight container or a freezer bag. They can be frozen for up to 3 months. Just thaw at room temperature before enjoying!
Frequently Asked Questions
Can I use a different type of cocoa powder?
Yes, you can use Dutch-processed cocoa powder for a slightly different flavor, but it may alter the final taste and texture slightly.
Can I make these brownies ahead of time?
Absolutely! You can bake them a day or two in advance. Just store them in an airtight container until you’re ready to serve.
How do I know when the brownies are done?
Check for doneness by inserting a toothpick into the center of the brownies. It should come out with a few moist crumbs, but not wet batter.
Can I add nuts to the brownie batter?
Yes! Chopped walnuts or pecans can be added to the batter for extra texture and flavor. Just fold them in after mixing the dry ingredients.
The Takeaway
Mississippi Mud Brownies are the ultimate dessert for chocolate lovers and an impressive treat for gatherings. With their rich flavors and delightful textures, it’s no wonder they have become a classic. Follow this easy recipe, tweak it to your liking, and enjoy the sweet satisfaction that only homemade brownies can bring. Whether you’re indulging yourself or sharing with friends, these brownies will undoubtedly be a hit. Grab your ingredients, preheat that oven, and get ready to delight in the gooey goodness of Mississippi Mud Brownies!

Mississippi Mud Brownies
Ingredients
Equipment
Method
- Step 1: Preheat your oven to 350°F (175°C). Grease your 9x13-inch baking pan or line it with parchment paper for easy removal.
- Step 2: In a large mixing bowl, whisk together the 1/3 cup unsweetened cocoa powder, 1/2 cup vegetable or canola oil, and 1/2 cup softened butter until smooth.
- Step 3: Stir in the 2 cups granulated sugar until well combined. Add the 4 large eggs one at a time, mixing well after each addition. Then, stir in 2 teaspoons vanilla extract.
- Step 4: In a separate bowl, combine 1 1/2 cups all-purpose flour and 1 teaspoon salt. Gradually add this mixture to the wet ingredients, stirring until just combined.
- Step 5: Pour the brownie batter into the prepared baking pan and spread it evenly. Bake in the preheated oven for about 25-30 minutes, or until a toothpick inserted into the center comes out with a few moist crumbs.
- Step 6: Once the brownies are baked, remove them from the oven and immediately sprinkle 3 cups mini marshmallows evenly over the top. Return to the oven for an additional 5-7 minutes, or until the marshmallows are fluffy and slightly golden.
- Step 7: While the brownies cool, whisk together the 1/2 cup melted butter, 1/3 cup cocoa powder, 1/3 cup evaporated milk, and 1 teaspoon vanilla extract. Gradually add 3 1/2 cups powdered sugar, mixing until smooth and creamy.
- Step 8: Spread the frosting over the warm marshmallow layer, allowing it to slightly melt into the marshmallows. Let the brownies cool completely before cutting into squares.
Notes
- Store brownies in an airtight container at room temperature for up to 3 days.
- For longer storage, wrap tightly in plastic and refrigerate for up to a week.
- Cut brownies into squares and freeze in an airtight container for up to 3 months.
