Mix 2 boxes of instant pudding with 3 cups milk. Stir until it begins to thicken.
Fold in container of Cool Whip.
Line a 9 x 13 pan with single layer of graham crackers.
Spread 1/3 of pudding mixture on top of crackers.
Place another layer of graham crackers on top of pudding.
Repeat layers, ending with pudding mixture.
Place in refrigerator to chill while making frosting*