Creating this cheesecake is a journey in itself, one that fills the kitchen with warmth and the promise of deliciousness.

1. Preheat your oven to 350°F (175°C). Grease a 9-inch springform pan and set aside.
2. In a medium bowl, mix the graham cracker crumbs, 1/3 cup sugar, and melted butter. Press into the bottom of the prepared pan to form the crust.
3. Bake the crust for 10 minutes, then remove from the oven and let it cool.
4. In a large bowl, beat together the cream cheese, sour cream, and 2/3 cup sugar until smooth and creamy. Add the eggs one at a time, mixing well after each addition, then stir in the vanilla extract.
5. Pour the cream cheese mixture over the cooled crust, spreading it evenly.
6. In another bowl, toss the chopped apples with brown sugar, cinnamon, and nutmeg. Spread the apple mixture evenly over the cheesecake layer.
7. For the crumble topping, combine the flour, oats, and brown sugar. Cut in the chilled butter until the mixture resembles coarse crumbs. Sprinkle this over the apple layer.
8. Bake for 50-60 minutes or until the center is set and the topping is golden brown. Allow the cheesecake to cool completely in the pan on a wire rack, then refrigerate for at least 4 hours before serving.

Tip from my mum: The key to a perfect cheesecake is patience. Allowing it to cool slowly helps prevent cracking. Remember, good things come to those who wait!