or whatever the package calls for
Prepare and bake brownie mix in a greased 13″x9″ baking pan according to package directions. Let cool.
For Middle Layer:
2 cups powdered sugar
1/2-cup butter, softened
1 (8 ounce) jar of creamy peanut butter
Mix powdered sugar, 1/2-cup butter and peanut butter.
Mix well and spread over cooled brownies.
Chill for one hour.
For Top Layer:
1 (6 ounce) package of semi-sweet chocolate chips
6 tablespoons butter, softened
Melt together chocolate chips and remaining butter in a saucepan over low heat, stirring occasionally until melted.
Spread over brownies.
Let cool; cut into squares.
Adapted from Handy Dandy Recipes