I start by mixing the vanilla wafer crumbs, sugar, and melted butter until everything looks like wet sand. The mixture is pressed firmly into the bottom of a springform pan to create an even layer. Baking it briefly helps set the crust so it doesn’t crumble later.
I beat the softened cream cheese until smooth before adding sugar. This step is crucial for avoiding lumps. Sour cream, mashed bananas, vanilla, and cream are mixed in slowly so the filling stays silky.
Eggs are added one at a time on low speed. I stop mixing as soon as they’re incorporated. Overmixing at this stage can add air, which often causes cracks.
The filling is poured over the cooled crust and smoothed on top. The pan goes into a water bath, which keeps the temperature gentle and even. Baking continues until the center is slightly jiggly but set around the edges.
Once baked, I turn off the oven and crack the door open. This slow cooling helps prevent cracks. After reaching room temperature, the cheesecake chills in the fridge for several hours to fully set.