Surprise Dessert - cooking recipe

Ingredients

1 pkg. graham crackers, crushed
1 c. peanut butter
1 c. melted margarine
3 3/4 c. powdered sugar
1 small pkg. chocolate chips

Preparation

Mix everything together, except chocolate chips.
Press into a 9 x 13-inch pan.
Put in refrigerator to harden a little bit. Melt chips, then spread over top.
Cool in refrigerator.