Preheat oven to 350° and line a cupcake with cupcake lines. Bake cake mix according to cupcake package instructions. Let cool completely.
Make pudding: In a large bowl, combine vanilla pudding, milk and sweetened condensed milk. Whisk until thickened, about 5 minutes. Fold in chopped bananas.
Make whipped cream: In a large bowl, combine heavy cream, powdered sugar and vanilla and beat with a hand mixer on high until light and fluffy, about 5 minutes. (Alternatively, you can beat the cream in the bowl of a stand mixer with a whisk attachment.)
Using a paring knife, cut small wells out of cooled cupcakes. Fill with banana pudding, then top with whipped cream. Garnish each cupcake with a banana slice, a Nilla wafter, and Nilla wafer crumbles.
Recipe by Cooking TV Recipes at https://cookingtv-channel.com/banana-pudding-cupcakes/