Reeses Peanut Butter Bars

1 cup peanut butter
1 cup butter, melted
2 cups graham cracker crumbs (very fine)
2 cups powdered sugar
1 bag milk chocolate chips

Stir peanut butter into warm melted butter until smooth. In large bowl, mix together crumbs, sugar and peanut butter mixture. Press into 9x13 pan. Refrigerate. Melt chocolate chips (or equivalent in Hershey bars). Spread melted chocolate over peanut butter mixture. Refrigerate 1 hour or til chocolate is set. Cut into squares.
Yield: approximately 36 bars