1 box graham crackers
2 small vanilla instant pudding
3 1/2 c. milk
1 (8 oz.) Cool Whip
1 can chocolate icing

Butter a 9 x 13-inch pan. Line with graham crackers. Mix pudding and milk; beat for 2 minutes. Blend in Cool Whip. Pour 1/2 of mixture over graham crackers then lay another of graham crackers. Pour rest of mixture over graham crackers. Add another layer of crackers. Refrigerate for 2 hours; frost with chocolate icing.