Oh, chocolate lovers, gather ’round! There’s just something magical about a dessert that’s decadent, rich, and utterly satisfying, isn’t there? That’s exactly what you get with these incredible Mississippi Mud Brownies. Forget boring, flat brownies; this recipe is all about layers of pure bliss – a fudgy base, a gooey marshmallow cloud, and a silky chocolate frosting that just melts in your mouth. I remember making these for the first time when I was desperate for a serious chocolate fix, and let me tell you, they did NOT disappoint!
Why You’ll Love These Mississippi Mud Brownies
- They’re unbelievably fudgy and rich – pure chocolate heaven!
- The gooey marshmallow layer is absolutely divine.
- Seriously easy to whip up, even for beginners.
- They look impressive, but the steps are totally doable.
- A crowd-pleaser that disappears FAST!
Ingredients for Your Perfect Mississippi Mud Brownies
Alright, let’s talk about what you’ll need to make these dream Mississippi Mud Brownies. Don’t worry, it’s a pretty straightforward list, and the results are SO worth it. For the fudgy brownie base, we’ll start with the essentials:
- 1/3 cup unsweetened cocoa powder (the richer, the better!)
- 1/2 cup vegetable oil
- 1/2 cup unsalted butter, softened (makes it all creamy)
- 2 cups granulated sugar
- 4 large eggs, at room temperature if you can swing it
- 2 teaspoons vanilla extract (always use the good stuff!)
- 1 1/2 cups all purpose flour
- 1 teaspoon salt (balances all that sweetness!)
Now, for that magical gooey layer and the luscious frosting:
- 3 cups mini marshmallows (trust me, you need these!)
- 1/2 cup unsalted butter, melted
- 1/3 cup unsweetened cocoa powder
- 1/3 cup evaporated milk
- 1 teaspoon vanilla extract
- 3 to 3 1/4 cups powdered sugar (start with 3, add more if needed!)
How to Make Mississippi Mud Brownies: Step-by-Step Guide
Okay, let’s get down to business with making these amazing Mississippi Mud Brownies! It’s really not complicated at all, and the end result is SO worth it. First things first, get your oven preheated to 350°F, and give a 9 by 13 inch baking pan a good grease-up so nothing sticks. We want these babies to slide right out!
For the brownie base, grab a big bowl. You’ll want to mix the unsweetened cocoa powder and vegetable oil together first. Give it a good stir until it’s nice and smooth. This step is key because it really blooms the cocoa, making it super chocolatey! Then, toss in your softened butter and mix it all up until it’s creamy and dreamy.
Now, add your granulated sugar and give it another good mix. After that, it’s time for the eggs! Beat them in one at a time, making sure to mix thoroughly after each one. This helps create that wonderful fudgy texture. Stir in your vanilla extract – use the real deal if you have it!
Next up, the flour and salt. Add these dry ingredients to the wet mixture and mix *just* until you don’t see any dry streaks anymore. Overmixing can make your brownies tough, and we definitely don’t want that! Pour this luscious batter evenly into your prepared pan. Smooth it out so it’s nice and flat.
Pop that pan into your preheated oven and bake for about 25 minutes. You’ll know they’re ready when a toothpick inserted into the center comes out with just a few moist crumbs clinging to it. We want them fudgy, not cakey! As soon as they come out of the oven, while they’re still warm, sprinkle those mini marshmallows evenly all over the top. Seriously, don’t wait too long here! Pop them back into the oven for just 2 to 3 minutes more, just until the marshmallows puff up and look a little melted and gooey. It’s like magic! These are truly some of the best Mississippi Mud Brownies you’ll ever make.
Once the marshmallows are looking perfect, take them out and let the whole pan cool down COMPLETELY. This is super important for the next steps. While they’re cooling, let’s make that amazing frosting. In a bowl, combine the melted butter, the rest of your unsweetened cocoa powder, the evaporated milk, and the last touch of vanilla. Whisk it all together until it’s smooth. Then, gradually add your powdered sugar, starting with about 3 cups, and mix until you get a nice, spreadable consistency. If it’s too thick, add a little more powdered sugar, a tablespoon at a time, until it’s just right. Spread this glorious frosting evenly over the cooled marshmallow layer. Let that frosting set up a bit before you slice into squares. Trust me, the wait is tough, but the payoff is incredible!
Serving Suggestions for Your Mississippi Mud Brownies
Okay, so these Mississippi Mud Brownies are seriously amazing on their own, but if you want to take them to the *next* level, here are a few ideas! They’re perfect with a glass of milk or even a cup of coffee, but if you’re feeling fancy:
A Scoop of Vanilla Ice Cream: This is a classic for a reason! The cool, creamy vanilla is the perfect contrast to the warm, fudgy brownie and rich chocolate. We love this easy homemade vanilla ice cream.
Fresh Raspberries or Strawberries: The slight tartness of fresh berries cuts through the richness of the chocolate beautifully. It adds a pop of color and freshness that’s just delightful. They’re also great on the side of some fluffy pancakes if you’re having a brunch spread!
A Dollop of Whipped Cream: Sometimes, all you need is a little cloud of airy sweetness. A simple whipped cream adds just the right touch of lightness without overpowering the brownie flavor.
Storing and Reheating Your Mississippi Mud Brownies
Okay, so you’ve made these absolutely divine Mississippi Mud Brownies, and you want them to stay perfectly delicious, right? I get it! The best way to keep them fresh is to store them in an airtight container at room temperature for up to 3 days. Honestly, they usually disappear way before that!
If you need them to last a bit longer, you can pop them in the fridge for up to a week. Just make sure they are well covered. When you’re ready for another bite, you can enjoy them chilled, or for that *just-baked* fudgy goodness, pop a square in the microwave for about 10-15 seconds. Don’t overdo it, or they’ll get too gooey. These are also fantastic for meal prep – make a batch on Sunday and you’ve got a sweet treat ready to go all week!
Frequently Asked Questions About Mississippi Mud Brownies
What makes these brownies “muddy”?
The name “Mississippi Mud” comes from the layers! You get that deep, fudgy brownie base – almost like rich, dark soil – topped with gooey, melted marshmallows that look like mud. Then there’s the smooth chocolate frosting on top. It’s all about that layered, intensely chocolatey experience!
Can I make Mississippi Mud Brownies with brownie mix?
You sure can! While this recipe makes them from scratch, you can totally use a box of your favorite fudgy brownie mix for a shortcut. Just follow the box directions for the brownie base, and then once they’re baked and slightly cooled, add the marshmallow and frosting layers as directed in my recipe. It’s a great way to get those delicious Mississippi Mud Brownies even faster!
How do I make sure my Mississippi Mud Bars cut nicely?
This is a great question! Since these brownies are so fudgy and gooey, they can be a little tricky to slice cleanly, especially when they’re fresh. My best tip is to let them cool COMPLETELY – seriously, wait until they’re totally at room temperature or even chill them in the fridge for about 30 minutes before cutting. Using a plastic knife or a sharp metal knife that you wipe clean between cuts helps a ton too. It’s worth the little extra effort for those perfect Mississippi Mud Bars!
Before You Go
I really hope you give these incredible Mississippi Mud Brownies a try! They’re pure chocolate magic. Let me know how they turn out in the comments below, and don’t forget to share your creations on Pinterest!
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Mississippi Mud Brownies
- Total Time: 45 min
- Yield: 24 brownies 1x
- Diet: Vegetarian
Description
A layered chocolate dessert with a fudgy brownie base, gooey marshmallow topping, and smooth chocolate frosting.
Ingredients
- 1/3 cup unsweetened cocoa powder
- 1/2 cup vegetable oil
- 1/2 cup unsalted butter, softened
- 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 unsalted butter, melted
- 1/3 cup unsweetened cocoa powder
- 1/3 cup evaporated milk
- 1 teaspoon vanilla extract
- 3 to 3 1/4 cups powdered sugar
Instructions
- Preheat your oven to 350°F. Grease a 9 by 13 inch baking pan.
- In a large bowl, mix the cocoa powder and vegetable oil until smooth. Add the softened butter and stir until fully combined and creamy.
- Add the sugar and mix well. Beat in the eggs one at a time, mixing thoroughly after each addition. Stir in the vanilla extract.
- Add the flour and salt, mixing just until no dry streaks remain. Pour the batter evenly into the prepared pan.
- Bake for 25 minutes or until a toothpick inserted in the center comes out with just a few moist crumbs.
- Remove from the oven and immediately sprinkle the marshmallows evenly over the top. Return to the oven for 2 to 3 minutes until marshmallows are puffed and slightly melted. Remove and cool completely.
- To make the frosting, combine the melted butter, cocoa powder, evaporated milk, and vanilla in a bowl. Mix until smooth, then gradually add powdered sugar until a spreadable consistency forms.
- Spread the frosting evenly over the cooled marshmallow layer. Allow the frosting to set before slicing into squares.
Notes
- For cleaner slices, chill the brownies before cutting and use a plastic knife to prevent sticking.
- These brownies taste even better after resting for several hours as the layers set.
- Prep Time: 20 min
- Cook Time: 25 min
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 brownie
- Calories: 290
- Fat: 14
- Carbohydrates: 40
- Protein: 3

