01 -
Preheat oven to 325°F (163°C). Lightly grease a 9-inch springform pan and wrap the exterior bottom with aluminum foil to prevent leakage.
02 -
In a mixing bowl, blend graham cracker crumbs, granulated sugar, and melted unsalted butter until the texture resembles wet sand. Firmly press the mixture into the base of the prepared pan. Bake for 10 minutes. Allow to cool at room temperature.
03 -
In a large bowl, use an electric mixer to beat softened cream cheese and granulated sugar until smooth. Incorporate eggs one at a time, mixing thoroughly after each addition. Blend in vanilla extract and sour cream, mixing until just combined. Pour the filling evenly onto the cooled crust.
04 -
Combine diced apples with light brown sugar, ground cinnamon, and nutmeg in a bowl. Gently layer the seasoned apples over the cheesecake filling.
05 -
In a clean bowl, mix oats, all-purpose flour, light brown sugar, and ground cinnamon. Add cold diced butter, blending by hand or with a pastry cutter until the mixture is crumbly. Distribute the topping evenly over the apple layer.
06 -
Bake for 55 to 65 minutes or until the center is just slightly set with a gentle jiggle. Turn off the oven, crack the door open, and leave the cheesecake to cool inside for 1 hour.
07 -
Remove from the oven and refrigerate for at least 4 hours or overnight to ensure optimal texture.