Preheat your oven to 325°F (160°C).
Mix graham cracker crumbs, melted butter, and sugar to form the crust.
Press the mixture into the bottom of a springform pan and bake for 10 minutes.
Beat cream cheese and sugar until smooth.
Add eggs one at a time, mixing well after each addition.
Stir in vanilla extract and pour over the crust.
Mix diced apples with cinnamon and layer over the cheesecake filling.
Combine flour, brown sugar, oats, and butter to create the crumble topping.
Sprinkle the crumble over the apples.
Bake for 40-45 minutes or until the center is set.