Peanut Butter Frosted Brownies

Peanut Butter Frosted Brownies 1 box brownie mix, plus ingredients to make 9x9-inch pan of brownies 1 cup powdered sugar 1 tsp vanilla 1/4 cup butter, softened 3/4 cup peanut butter 3 Tbsp milk Make brownies in an 9x9-inch pan according to package directions. Cool completely. For frosting: Put powdered sugar, vanilla, butter, peanut butter and milk in a medium bowl. Beat with a hand-held electric mixture until combined. Add more milk until you get the desired consistency. Spread frosting over cooled brownies. Cut into squares. Sprinkle with powdered sugar if desired.