Mississippi Mud Pie Brownies Recipe

There is something truly irresistible about the Mississippi Mud Pie Brownies Recipe. Imagine rich, fudgy brownies loaded with melty chocolate chunks, topped with a gooey layer of toasted mini marshmallows, all crowned with a luscious cocoa-infused icing. This dessert is a chocolate lover’s dream come true, combining decadent textures and deep flavors to create a show-stopping sweet treat that feels cozy, indulgent, and totally unforgettable.

Ingredients You’ll Need

Getting ready to make these beauties is a breeze because the ingredients are straightforward yet powerful. Each item plays a key role in building that signature rich, fudgy crumb and the decadent topping that makes this recipe stand out.

• 1 cup unsalted butter: Provides a creamy base and richness that makes the brownies wonderfully moist.
• 2½ cups granulated sugar: Sweetens the batter just right, balancing deep cocoa flavors perfectly.
• 2 tablespoons canola oil: Adds extra moisture and a bit of tenderness without overpowering.
• 1 tablespoon vanilla extract: Enhances the chocolate’s complexity with its warm, sweet aroma.
• 5 large eggs: Bind the ingredients and build structure for that perfect fudgy texture.
• 1 cup all-purpose flour: Gives just enough structure without making the brownies cakey.
• ¾ cup + 1 tablespoon Dutch-process cocoa powder: Delivers a bold, rich chocolate flavor with a smooth finish.
• ¾ teaspoon salt: Balances sweetness and intensifies chocolate notes.
• 8 ounces dark or milk chocolate: Chunky melty pockets of chocolate in every bite.
• 6 cups mini marshmallows: Creates that iconic gooey, toasted marshmallow topping every Mississippi Mud Pie brownie needs.
• 6 tablespoons salted butter: Used in the glossy, creamy cocoa icing for a salted-sweet contrast.
• 2½ cups powdered sugar: Sweet, smooth sweetness for the icing.
• 2 tablespoons unsweetened cocoa powder: Adds an intense chocolate kick to the icing.
• ¼ cup whole milk: Makes the icing silky and pourable.
• 2 teaspoons vanilla extract: Rounds out the icing’s flavor with its warm sweetness.

How to Make Mississippi Mud Pie Brownies Recipe

Step 1: Prepare Your Pan and Oven

Begin by preheating your oven to 350°F. Line a sturdy 9×13-inch metal cake pan with parchment paper, making sure some hangs over the edges for easy brownie removal later. Using two sheets can help cover the pan fully—one along the length and the other across the shorter side. Give the parchment a light spray of cooking spray to prevent sticking. This prep sets the stage for perfect brownies every time.

Step 2: Make the Butter and Sugar Base

Melt 1 cup of unsalted butter gently over low heat in a heavy-bottomed saucepan. Slowly stir in 2½ cups granulated sugar until everything is smooth and slightly emulsified—watch for no separation of butter and sugar. Let this sit off the heat for about 5 minutes, stirring regularly to cool it down without hardening. This step ensures the sugar dissolves properly, giving the brownies a silky texture.

Step 3: Incorporate Oil and Vanilla

Add 2 tablespoons canola oil and 1 tablespoon vanilla extract to the warm butter-sugar mixture. Stir well with a rubber spatula until fully blended. You want to see a consistent mix with no oil floating on top—this keeps your brownies moist and packed with flavor.

Step 4: Add Eggs One by One

Beat in 5 large eggs one at a time, mixing fully after each addition. This method helps create a cohesive batter that’s rich and holds together beautifully, crucial for those fudgy centers you’re craving.

Step 5: Combine the Dry Ingredients

Sift together 1 cup all-purpose flour, ¾ cup plus 1 tablespoon Dutch-process cocoa powder, and ¾ teaspoon salt. Gently fold these dry ingredients into the wet mixture with a spatula, stirring just until the last streaks disappear. Overmixing can lead to tougher brownies, so keep it gentle to retain softness.

Step 6: Fold in the Chocolate Chunks

Fold in most of your 8 ounces of chopped dark or milk chocolate, leaving a handful aside for the top. These chunks melt slightly during baking and add bursts of chocolate goodness that elevate every bite.

Step 7: Bake the Brownies

Pour the luscious batter into your prepared pan, smoothing the top. Sprinkle the reserved chocolate chunks on top for that extra chocolatey finish. Bake for 25 minutes until the edges set but the center still looks just slightly undercooked—this is key for that fudgy texture.

Step 8: Add the Marshmallows

Take the brownies out and evenly cover them with 6 cups of mini marshmallows. Pop them back into the oven for about 3 minutes to let the marshmallows toast lightly and become gooey—this step gives the pie its signature “muddy” marshmallow layer.

Step 9: Cool and Prepare the Icing

Remove the pan and let the marshmallow-topped brownies cool for a few minutes while you make the icing. The cooling time helps prevent the icing from melting the marshmallows completely.

Step 10: Make the Cocoa Icing

Melt 6 tablespoons salted butter in a saucepan over medium heat. Sift in 2½ cups powdered sugar and 2 tablespoons cocoa powder, whisking to combine. Whisk in ¼ cup whole milk and 2 teaspoons vanilla extract until smooth. This glossy icing is rich, slightly salted, and perfectly complements the sweet marshmallow topping.

Step 11: Frost the Brownies

Take the icing off the heat and immediately pour it evenly over the marshmallows. Use a rubber spatula to spread it gently so that every square will have that dreamy, fudgy top layer. The icing sets quickly, so work with some speed but care.

Step 12: Let It Set Before Serving

Allow the icing to fully set before lifting the brownies out by the parchment. For the cleanest slices, use a plastic knife—metal ones might make marshmallows stick. Once cut, you’re ready to enjoy these heavenly bites of chocolate bliss!

How to Serve Mississippi Mud Pie Brownies Recipe

Garnishes

While the brownies are stunning on their own, a sprinkle of flaky sea salt brings out the chocolate’s richness beautifully. For an extra indulgent touch, add a few chocolate shavings or a dusting of cocoa powder on top right before serving to enhance their luxurious look and taste.

Side Dishes

Mississippi Mud Pie Brownies pair wonderfully with a scoop of vanilla bean ice cream or a dollop of freshly whipped cream. The cool creaminess balances the warm, fudgy texture in a way that’s simply irresistible. Fresh berries like raspberries or strawberries also add a bright contrast if you want a fruity accompaniment.

Creative Ways to Present

Thinking outside the box? Turn these brownies into an elegant dessert platter by layering brownie squares with other treats like toasted pecans, caramel drizzle, or chocolate sauce. You can also cut them into small bites and serve them on skewers with mini marshmallows and strawberries for a fun, party-friendly presentation.

Make Ahead and Storage

Storing Leftovers

Once completely cooled and iced, store your Mississippi Mud Pie Brownies in an airtight container at room temperature for up to 3 days. They’re just as delightful the next day after the flavors have had time to meld together even more.

Freezing

These brownies freeze beautifully! Wrap individual squares tightly in plastic wrap and place them in a freezer-safe container or zip-top bag. They will keep for up to 3 months. When ready to enjoy, thaw at room temperature or gently warm them for that freshly-baked feeling.

Reheating

To bring back the soft, gooey texture, pop a brownie square in the microwave for about 10-15 seconds. Be careful not to overheat or the marshmallows may harden. This quick reheat recreates the magic of freshly baked chocolatey bliss.

FAQs

Can I use milk chocolate instead of dark for this Mississippi Mud Pie Brownies Recipe?

Absolutely! Using milk chocolate will make the brownies sweeter and creamier. Dark chocolate offers a more intense chocolate flavor, so feel free to choose based on your personal preference.

What’s the best way to melt the butter without burning it?

Use low heat and stir frequently when melting butter to prevent it from browning or burning. A heavy-bottomed saucepan helps distribute heat evenly for the smoothest result.

Why do I need to add the eggs one at a time?

Adding eggs gradually ensures they fully incorporate and helps create a smooth, cohesive batter that bakes into fudgy, dense brownies instead of cakey or crumbly ones.

Can I substitute mini marshmallows with regular size?

Yes, but regular marshmallows will take longer to melt and might not spread as evenly on top. Cutting them into smaller pieces will help mimic the effect of mini marshmallows.

Is it necessary to use Dutch-process cocoa powder?

It’s recommended because Dutch-process cocoa has a mellow, less acidic flavor that pairs beautifully with the sweetness of the brownies and icing. However, natural cocoa powder can work in a pinch, but taste and texture might vary slightly.

Final Thoughts

If you’re looking for a dessert that feels like a warm hug and delivers show-stopping chocolate decadence, you need to try this Mississippi Mud Pie Brownies Recipe. It’s a truly special treat that brings everyone to the table with smiles, gooey marshmallow magic, and rich, fudgy brownies that you’ll want to bake again and again. Trust me, once you make these, they’ll be one of your favorites too!

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