Easy Mississippi Mud Brownies Recipe

Indulge your sweet tooth cravings with the irresistibly rich and gooey texture of Mississippi mud brownies. These decadent treats are the perfect blend of chocolate, marshmallow, and nuts, delivering a heavenly taste that will have you reaching for seconds. Easy to make and perfect for any occasion, you’ll soon discover why these brownies have earned a special place in the hearts of dessert lovers everywhere.
This recipe is a nostalgic culinary journey for me, reminiscent of countless family gatherings where these brownies were always the star of the dessert table. My grandmother passed down this beloved recipe, infused with love and laughter during many a Sunday afternoon in her cozy kitchen. Each bite transports me back to those cherished moments, filled with the rich aroma of chocolate and the warmth of familial bonding.
Why You’ll Love This Recipe
- Effortless Preparation: With a straightforward, easy-to-follow method, these brownies are perfect for both novice and experienced bakers.
- Decadent Layers: The combination of chocolate fudge, gooey marshmallows, and crunchy nuts makes each bite a delightful surprise.
- Versatile Dessert: Whether it’s a casual get-together or a festive celebration, these brownies fit right in and can be tailored to any occasion.
Ingredients Notes
To achieve the best results, opt for high-quality unsweetened cocoa powder for a rich chocolate flavor. You can substitute walnuts with pecans if preferred, or omit nuts entirely for an allergy-friendly version. For a vegetarian twist, try using marshmallow fluff instead of traditional marshmallows.
Recipe Steps
Step 1
Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking pan and line with parchment paper for easy removal.
Step 2
Melt 1 cup of unsalted butter in a saucepan over low heat, then stir in 2 cups of sugar and 3/4 cup of unsweetened cocoa powder until smooth.
Step 3
Remove from heat and incorporate 4 large eggs, one at a time, beating well after each addition. Stir in 1 teaspoon of vanilla extract.
Step 4
Gently fold in 1 cup of all-purpose flour and 1/4 teaspoon of salt until just combined. Pour the batter into the prepared pan and smooth the top.
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Step 5
Bake for 30-35 minutes until the center is set. Remove from the oven and sprinkle evenly with 2 cups of mini marshmallows and 1 cup of chopped nuts. Return to the oven for 5 minutes until the marshmallows are soft.
Storage Options
To keep your brownies fresh, store them in an airtight container at room temperature for up to three days. For longer storage, freeze them individually wrapped in plastic wrap for up to two months. Reheat by thawing at room temperature or microwaving for a few seconds until warm.
Variations & Substitutions
For a gluten-free option, substitute the all-purpose flour with a 1:1 gluten-free baking flour. To add a twist of flavor, consider swirling in peanut butter or cream cheese before baking. For a more indulgent texture, add dark chocolate chips to the batter.
Serving Suggestions
These brownies are perfect for a midday snack or as a sumptuous end to dinner. Serve them warm with a scoop of vanilla ice cream or alongside a hot cup of coffee for a deliciously satisfying treat. They also make an excellent homemade gift, packaged in a decorative tin for friends and family.
Frequently Asked Questions
Can I use a different type of nut in this recipe? Absolutely! Feel free to experiment with your favorite nuts such as pecans or almonds. If you prefer a nut-free version, simply omit them altogether without compromising the overall flavor.
How can I tell when the brownies are done? Use a toothpick to test the center. If it comes out mostly clean with a few crumbs attached, it’s ready. Avoid overbaking, as this can lead to dry brownies.
What’s the best way to achieve a gooey consistency? To ensure gooey brownies, be careful not to overmix the batter and avoid baking them too long. The center should be just set, with the edges pulling away slightly from the pan sides.

Easy Mississippi Mud Brownies Recipe
Ingredients
Main Ingredients
- 1 cup all-purpose flour
- 0.5 teaspoon baking powder
- 0.25 teaspoon salt
- 1 cup unsalted butter melted
- 2 cups granulated sugar
- 4 large eggs room temperature
- 1 teaspoon vanilla extract
- 0.75 cup cocoa powder
- 1 cup marshmallow fluff
- 0.5 cup chopped toasted pecans optional
- 0.5 cup hazelnut chocolate spread such as Nutella
Instructions
Preparation Steps
- Preheat your oven to 350°F (175°C) and grease a 9x13 inch baking pan.
- In a medium bowl, whisk together the flour, baking powder, and salt.
- In a large bowl, combine melted butter and sugar, then add in eggs and vanilla extract. Mix until smooth.
- Gently mix in the dry ingredients and cocoa powder until just combined.
- Pour the batter into the prepared pan and bake for 25-30 minutes, or until a toothpick inserted in the center comes out with moist crumbs.
- Spread marshmallow fluff over the hot brownies, then drizzle with hazelnut chocolate spread and sprinkle with pecans if using.