1 box graham crackers
6 oz. Cool Whip
6 oz. pkg. instant vanilla pudding
1 can frosting

Line 9 x 13 glass dish with graham crackers. Mix Cool Whip and pudding according to directions. Layer 1/2 of this mixture on top of crackers. Layer again with crackers and again with remaining pudding mixture. End with third layer of crackers. Spread frosting on top. Refrigerate overnight.