1-1/4 cups graham cracker crumbs (one package)
1 cup butter or margarine
1 cup peanut butter
1 pound powdered sugar
Pat into a 9x13 pan.
Melt in double boiler or microwave until smooth:
12 oz chocolate chips
1 T shortening
Pour chocolate over peanut butter mixture and allow to cool just until set, then cut into squares.