Peanut Butter Mississippi Mud Brownies

Name: Peanut Butter Mississippi Mud Brownies
Prep time: 30 min
Cook time: 55 min
Total time: 1 h 25 min
Yield: 30 serving(s)
Ingredients: 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; 1/4 cup butter; 3 tablespoons unsweetened cocoa; 3 tablespoons milk; 2 cups powdered sugar; 1/2 teaspoon vanilla extract

Submitted by Pinay0618

"Shut the front door! Southern Living, you're killin' me!"

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Ready In:: 1hr 25mins
Ingredients:: 17
Serves:: 30

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

directions

Preheat oven to 350°. 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.
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.
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.
Spoon peanut butter mixture over brownie batter; top with remaining brownie batter, and swirl together.
Bake at 350° 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.
For frosting:
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.