Crush the vanilla wafers and mix with melted butter and brown sugar.
Press the mixture firmly into the bottom of a springform pan to form the crust. Chill while making the filling.
In a large bowl, beat the softened cream cheese and sugar until smooth and creamy.
Add the vanilla extract, banana pudding mix, and milk; mix until thickened.
Fold in the whipped topping gently until the mixture is light and fluffy.
Spread a layer of filling over the crust, add banana slices, then top with remaining filling.
Smooth the top, add whipped topping, and sprinkle with crushed wafers.
Chill for at least 4 hours or overnight before serving.
