In a large bowl, beat pudding mix and milk together until smooth and thickened.
Add sweetened condensed milk, cool whip and beat until combined.
Slice bananas and line bottom and sides of pie crust, keeping remaining bananas for topping.
Pour pudding mixture over bananas and spread.
Add vanilla wafers, crushed vanilla wafers, sliced bananas and dollops of cool whip on top.
Place in fridge to chill.