Buckeye Brownies

19 1/2 oz brownie mix (13x9 size)

2 cups powdered sugar

1/2 cup plus 6 Tb butter, softened

8 oz peanut butter

6 oz chocolate chips

Bake brownies as directed on box in 13x9 inch pan. cool. Mix powdered sugar, 1/2 cup butter, and peanut butter. Spread over brownies. Chill 1 hour. Melt chocolate chips with remaining butter and pour over brownies. Chill and cut.