3/4 cup (1 1/2 sticks) butter or margarine softened
2 cups powdered sugar
2 1/2 cups graham cracker crumbs
2 cups or 12 oz. milk chocolate chips
Beat 1 1/4 cup of peanut butter and butter together. Gradually add the sugar, graham crackers, and 1/2 cup of chocolate chips. Firmly press the mixture into a 9 x 13 inch pan. Melt the remaining peanut butter and chocolate in a microwave safe bowl. Place the icing on the bars while hot. After icing is spread, place in the refrigerator to firm up for a couple of hours. Cut into small squares.
This taste very close to Reese's Peanut Butter Cups.