Line the bottom of a 22 cm / 9-inch Springform Pan with Baking Paper and grease the edges.

Crush the Digestive Biscuits into fine crumbs. You can do this by hand in a small plastic bag or use a food processor.

Add the melted butter to the crushed Digestive Biscuits and mix until it resembles wet sand.

Ingredients needed: 90 grams (6 tbsp) of Unsalted Butter, and 180 grams (1 3/4 cups - crushed) of Digestive Biscuits.

Firmly press the biscuit crumbs onto the bottom of the prepared pan.

Place the pan in the fridge to set.

Preheat your oven to 140°C/285°F.

In a large mixing bowl, combine: 50 grams (1/3 cup) Plain/All-Purpose Flour, 50 grams (1/2 cup) Rolled Oats, 45 grams (4 tbsp) Brown Sugar, 1 tsp Ground Cinnamon, Pour 45 grams (3 tbsp) of melted

Unsalted Butter over the dry ingredients.

Mix the ingredients with a spatula until you achieve large crumbs. Set aside the crumble mixture for later use.

Wash and remove the cores from the apples, then cut them into small pieces. Set aside. You should have 2 small apples.

In a large bowl or using a stand mixer with the paddle attachment (or a hand mixer), blend the cream cheese and sour cream until completely smooth. This will take a few minutes at medium speed.

Add sugar, cinnamon, and vanilla to the mixture. Then, add the eggs one at a time, mixing until just combined. The cheesecake batter may seem quite liquid, but that's okay.

Remove the chilled crust in the springform pan from the oven. Pour the cinnamon cheesecake mixture over it. Tap the pan on a hard surface a few times to get rid of air bubbles.

Spread the cubed apples over the cheesecake mixture (refer to note 4) and top them with the crumble.

Put the apple crumble cheesecake on the lowest oven rack and bake for 60 to 70 minutes. The cheesecake should still jiggle slightly when fully baked.

Turn off the oven and let the cheesecake cool inside with the door slightly open for 1 hour. Afterward, take it out, let it cool at room temperature for another hour, and then refrigerate for at least two to three hours, or preferably overnight.