No Bake Peanut Butter Squares

Directions

1. Mix together graham cracker crumbs, powdered sugar, peanut butter and melted butter, blending well.
2. Press mixture into a 9x13 baking pan lined with waxed paper.
3. Combine chocolate chips and shortening and heat in microwave, stirring often, until melted.
4. Pour chocolate over peanut butter mixture and spread evenly.
5. Chill in refrigerator until chocolate sets. Cut into squares. Keep refrigerated.