1 can sweetened condensed milk
3 ripe bananas
1 graham cracker pie shell

Boil unopened can of milk in water at a rolling boil for 2 1/2 hours, continuously keeping water above the level of can. Cool before opening. This makes caramel. Slice bananas in a bed in pie shell. Cover with cool caramel. Spoon on Cool Whip topping. Chill well and serve.