Chocolate Peanut Butter Squares

Ingredients
1 cup butter
4 cups confectioners' sugar
2 cups peanut butter
1 1/2 cups graham cracker crumbs
1/2 cup butter
1 cup semisweet chocolate chips

Directions
Melt 1 cup butter or margarine over low heat. Remove from heat and stir in confectioners' sugar, peanut butter and graham cracker crumbs. Spread mixture in a jelly roll pan. Pat down evenly.
To Make Topping: Melt together 1/2 cup butter or margarine with 1 cup chocolate chips. Spread this mixture over peanut butter mixture. Refrigerate 1/2 hour. Cut into squares.