1 can sweetened condensed milk
1 lg. box vanilla instant pudding mix
1 lg. Cool Whip
Bananas
Vanilla wafers

(Or 2 small boxes omitting 1 cup milk - 3 cups milk total).

Mix pudding by box directions. Stir in condensed milk. Fold in Cool Whip. In a very large bowl, alternate in layers: cookies, bananas, pudding mixture; 3 times.