01 -
Preheat oven to 350°F. In a mixing bowl, combine graham cracker crumbs, melted butter, and granulated sugar until fully blended. Firmly press the mixture onto the bottom of a 9-inch springform pan to form an even, compact layer. Set aside.
02 -
Melt unsalted butter in a skillet over medium heat. Add sliced apples, brown sugar, cinnamon, and nutmeg. Sauté until the apples are just tender, about 5 to 7 minutes, stirring occasionally. Remove from heat and let cool to room temperature.
03 -
In a large bowl, beat softened cream cheese, granulated sugar, and vanilla extract until creamy and smooth. Add eggs one at a time, incorporating each fully before adding the next, taking care not to overmix.
04 -
Pour half of the cheesecake filling over the prepared crust. Evenly distribute half of the cooled apple filling on top. Repeat with the remaining cheesecake filling and apple mixture, creating alternating layers.
05 -
In a bowl, combine flour, oats, brown sugar, and ground cinnamon. Add cold, cubed butter and incorporate it using your fingers or a pastry cutter until the mixture forms coarse crumbs. Sprinkle the crumble topping evenly over the layered cheesecake.
06 -
Bake in the preheated oven for 50 to 60 minutes, until the center sets but retains a slight jiggle. Cool completely on a wire rack without releasing the pan. Refrigerate for at least 4 hours before serving for optimal texture.