Preheat oven to 325°F. Line a 9-inch springform pan with parchment paper and grease the sides.

Combine crushed vanilla wafers, melted butter, and sugar; press into the bottom and up sides of the pan.

Bake crust for 10 minutes and let cool.

Reduce oven temperature to 300°F. Beat cream cheese, sugar, and flour until smooth.

Add sour cream and banana extract; mix well.

Mix in mashed bananas. Add eggs one at a time, mixing after each.

Pour batter into crust. Bake in water bath for 1 hour 10 minutes. Cool and refrigerate.

Prepare whipped creams by whipping heavy cream with powdered sugar; freeze flavors.

Spread scoops of whipped cream on cheesecake, add toppings, pipe vanilla whipped cream on top.

Serve immediately or refrigerate, add final toppings before serving.