Peanut Butter Mississippi Mud Brownies Recipe

Name: Peanut Butter Mississippi Mud Brownies
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: Brownies; 4 (1 ounce) unsweetened chocolate squares; 1 1/3 cups butter, softened and divided; 2 1/2 cups granulated sugar, divided; 4 large eggs; 2 cups all-purpose flour, divided; 1 teaspoon vanilla extract; 1/2 cup creamy peanut butter; 1/2 cup firmly packed light brown sugar; 2 large eggs; 1 teaspoon baking powder; 3 cups miniature marshmallows; 1 1/2 cups lightly dry roasted salted peanuts; Chocolate Frosting; 1/4 cup butter; 3 tablespoons unsweetened cocoa; 3 tablespoons milk; 2 cups powdered sugar; 1/2 teaspoon vanilla extract

Servings: persons

Brownies
4 (1 ounce) unsweetened chocolate squares
1 1/3 cups butter, softened and divided
2 1/2 cups granulated sugar, divided
4 large eggs
2 cups all-purpose flour, divided
1 teaspoon vanilla extract
1/2 cup creamy peanut butter
1/2 cup firmly packed light brown sugar
2 large eggs
1 teaspoon baking powder
3 cups miniature marshmallows
1 1/2 cups lightly dry roasted salted peanuts
Chocolate Frosting
1/4 cup butter
3 tablespoons unsweetened cocoa
3 tablespoons milk
2 cups powdered sugar
1/2 teaspoon vanilla extract

1
Preheat oven to 350u00b0. Microwave chocolate in a microwave-safe bowl at MEDIUM (50% power) 1 1/2 minutes or until melted and smooth, stirring at 30-second intervals.
2
Beat 1 cup butter and 2 cups granulated sugar at medium speed with an electric mixer until light and fluffy. Add 4 eggs, 1 at a time, beating just until blended after each addition. Add melted chocolate, beating just until blended. Add 1 cup flour, beating at low speed just until blended. Stir in vanilla. Spread half of batter in a greased and floured 13- x 9-inch pan.
3
Beat peanut butter, brown sugar, and remaining 1/3 cup butter and 1/2 cup granulated sugar at medium speed with an electric mixer until light and fluffy. Add 2 eggs, 1 at a time, beating just until blended after each addition. Stir together baking powder and remaining 1 cup flour, and add to peanut butter mixture, beating at low speed just until blended.
4
Spoon peanut butter mixture over brownie batter; top with remaining brownie batter, and swirl together.
5
Bake at 350u00b0 for 45 to 55 minutes or until a wooden pick inserted in center comes out with a few moist crumbs. Remove from oven to a wire rack; sprinkle with marshmallows and peanuts.
6
For frosting:
7
Cook butter, cocoa, and milk in a saucepan over medium heat, whisking constantly, 4 minutes or until slightly thickened; remove from heat. Whisk in powdered sugar and vanilla until smooth.

2967

kcal

Calories

163

Fat

343

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Preheat the oven fully and bake on the middle rack for the most even results.
Check for doneness a few minutes early — a toothpick in the center should come out with just a few moist crumbs.
Let it cool before slicing so it sets properly and holds its shape.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Use a neutral oil or a plant-based spread in place of butter for a dairy-free version.
Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.
A good 1:1 gluten-free flour blend works well if you need a gluten-free version.
Coconut cream is a reliable plant-based alternative to dairy cream.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 19 ingredients. The key ingredients include: Brownies, 4 (1 ounce) unsweetened chocolate squares, 1 1/3 cups butter, softened and divided, 2 1/2 cups granulated sugar, divided, and more.

Yes, Peanut Butter Mississippi Mud Brownies falls under the Baking & Desserts category and is a great choice for this type of meal.

Store in an airtight container at room temperature for up to 3–5 days. For longer storage, freeze for up to 3 months — no need to refrigerate or reheat.

That's it — enjoy your meal!

Peanut Butter Mississippi Mud Brownies

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions