Follow these steps to create your Banana Cream Cheesecake:

1. Preheat Oven: Preheat your oven to 325°F (164°C).
2. Prepare the Crust: In a medium bowl, combine graham cracker crumbs and melted butter. Mix well and press into the bottom of a 9-inch springform pan to form an even layer. Bake for 8-10 minutes, then remove and let cool.
3. Make the Cheesecake Filling: In a large mixing bowl, beat the softened cream cheese and granulated sugar until smooth. Add the vanilla extract, and mix well.
4. Add Eggs: Beat in the eggs one at a time, mixing gently after each addition until fully incorporated.
5. Incorporate Bananas: Fold in the mashed bananas and, if using, banana extract. Mix until combined.
6. Pour into Pan: Pour the cheesecake mixture over the cooled crust, spreading evenly.
7. Bake the Cheesecake: Bake for 50-60 minutes, or until the center is set but still slightly jiggly.
8. Cool Down: Turn off the oven and leave the cheesecake inside with the door ajar for about an hour. This helps prevent cracking.
9. Chill: Remove the cheesecake from the oven and let it cool to room temperature. Then, cover and refrigerate for at least 4 hours or overnight.
10. Prepare Whipped Cream: Before serving, whip the heavy cream with powdered sugar until soft peaks form.
11. Top the Cheesecake: Spread the whipped cream over the chilled cheesecake. Garnish with fresh banana slices.
12. Serve: Carefully release the cheesecake from the springform pan and slice to serve.

With these step-by-step instructions, you’re equipped to create an incredible dessert that will delight everyone!