RESERVE 1 1/2 cups whipped topping in small bowl.
BEAT pumpkin, evaporated milk and pudding mix in medium bowl until well blended. Immediately fold in remaining 1 1/2 cups whipped topping into pumpkin mixture.
CRUMBLE 1 wafer into each of six glass serving dishes.
DIVIDE half of pudding mixture evenly over crumbled wafers in dishes. Slice one banana into 18 slices. Top each pudding with three slices of banana. Divide half of reserved whipped topping over banana slices. Repeat with remaining pudding mixture, banana and whipped topping. Top each pudding with 1 of remaining whole wafers.
• This recipe can also be made in 8-inch-square baking dish. Follow recipe above. Crumble 6 wafers for bottom layer and top pudding with remaining 6 (or more!) whole wafers.