1/2 lb. graham cracker crumbs
1 c. peanut butter
1 c. (2 sticks) butter, or butter
3 1/2 c. powdered sugar

Combine cracker crumbs, peanut butter, butter and powdered sugar. Work well with fingers and press into a 9x13 inch pan.

FROSTING:

3 tbsp. butter
3 tbsp. brown sugar
3 tbsp. milk
1 c. chocolate chips

Combine butter, brown sugar, and milk in a small saucepan and boil for 1 minute. Add chocolate chips and stir until smooth. Spread on top of bars. Let cool and cut into squares. Makes about 32 (1 1/2 inch) squares.