In the bottom of a 9x13 dish, layer half of the box of vanilla wafers. Layer the sliced bananas over top of the vanilla wafers.
In a bowl, combine the pudding mix with the heavy cream. Set aside.
In another bowl using an electric mixer, cream together the cream cheese and sweetened condensed milk. Mix the pudding into the cream cheese mixture.
Fold in the thawed whipped topping.
Spread the mixture over the vanilla wafers.
Top with the remaining vanilla wafers.
Refrigerate overnight or at least 6 hours before serving.