Peanut Butter Cup Bars

Base:

1/2 cup butter, melted

1 3/4 cups powdered sugar

1 cup peanut butter

3/4 cup graham cracker crumbs

Topping:

1 cup chocolate chips

Melt butter in saucepan on stove.  When melted, remove from heat and mix in powdered sugar.  Stir until smooth.  Add peanut butter and crumbs and mix well.  Pour into an 8x8 pan lined with foil and greased.  Melt chocolate chips and pour over peanut butter base.  Place in refrigerator for 15 minutes until chocolate has hardened.  Cut and serve.