I watched Mind of the Chef (Netflix), Season 1 the fermentation episode a few days ago. The chef from Momofuku Milk Bar showed a banana cream pie recipe that used very ripe bananas and this pie has very strong banana taste that there was difficult to produce in a banana dessert. The bananas need to have spots on it, she put it the freezer for 3 days, so they turned all black.
Here’s the recipe: