2 large apples (preferably Granny Smith or Honeycrisp), peeled, cored, and diced into 1/2-inch pieces
1/2 cup packed brown sugar
1 teaspoon ground cinnamon
1/4 teaspoon ground nutmeg
1 tablespoon all-purpose flour (to toss with the apples)
3/4 cup all-purpose flour
1/3 cup rolled oats
1/3 cup packed brown sugar
1/2 teaspoon ground cinnamon
6 tablespoons unsalted butter, cold and cut into small cubes
Instructions
Prepare the crust: Mix graham cracker crumbs with sugar and melted butter until well combined. Press this mixture firmly into the bottom of a 9-inch springform pan. Use the bottom of a glass to smooth it out evenly. Chill while you prepare the filling.
Apple filling: Toss diced apples with brown sugar, cinnamon, nutmeg, and 1 tablespoon flour. Set aside to let the flavors meld, about 10 minutes.
Make the crumble topping: In a bowl, mix flour, oats, brown sugar, and cinnamon. Cut in the cold butter with your fingers or a pastry cutter until the mixture resembles coarse crumbs. Keep this in the fridge until ready to use.
Cheesecake filling: Beat the cream cheese and sugar with an electric mixer until smooth and creamy. Add eggs one at a time, mixing well after each addition. Stir in vanilla extract.
Assemble the cheesecake: Pour half the cheesecake batter over the chilled crust. Spread the apple mixture evenly on top, then pour the remaining batter over the apples carefully to keep the layers distinct.
Add the crumble: Sprinkle the chilled crumble topping evenly over everything to create a golden, crisp layer after baking.
Bake: Place the pan on a baking sheet and bake at 325°F (163°C) for 60-70 minutes. The edges should be set, but the center will have a slight jiggle. Avoid overbaking to keep the cheesecake creamy.
Cool: Let the cheesecake cool at room temperature for 1 hour, then chill in the fridge for at least 4 hours or overnight before serving.