Buckeye Brownies recipe from Mountain View Country Market in Chuckey,TNBuckeye Brownies

1 (19 1/2 oz.) pkg. brownie mix
2 c. powdered sugar
1/2 c. + 6 Tbsp. butter, softened and divided
1 c. creamy peanut butter
1 c. semisweet chocolate chips

Prepare and bake brownie mix according to directions in a 9"x13"
pan. Cool. Mix together powdered sugar, 1/2 cup butter, and peanut
butter. Spread over brownies. Chill 1 hour. Melt together chocolate
chips and remaining 6 tablespoons butter over low heat, stirring
occasionally. Spread over brownies. Let cool. Cut into squares.