Crush the vanilla wafers in a food processor or zip-top bag with a rolling pin until fine crumbs form.
Mix the melted butter into the crumbs until everything's coated and a little sticky.
Press this mixture firmly into the bottom of a 9-inch pie dish. Set it in the fridge to chill while you work on the filling.
In a large bowl, whisk the banana pudding mix with cold milk for 2 minutes. Let it sit and thicken for a few more.
In another bowl, beat the cream cheese until smooth, then blend in the sweetened condensed milk until velvety.
Fold in the pudding mixture. Then gently fold in about half of the whipped topping until fluffy.
Grab your pie crust and line the bottom with banana slices. Pour in the pudding mixture and smooth the top.
Top it off with the remaining whipped topping and a few more banana slices or crushed wafers if you’re feeling fancy.
Cover and refrigerate for at least 4 hours (overnight is even better). Slice and serve chilled.