2 sticks butter
2 2/3 c. powdered sugar
1 c. crunchy peanut butter
1 3/4 c. graham cracker crumbs
1 lg. Hershey's bar (or 1 1/2 c. milk chocolate chips)

Melt butter. Stir in powdered sugar, peanut butter and graham cracker crumbs. Press into 9x13 inch pan. Melt chocolate, then spread on top of mixture. Let cool and cut into bars.