• Cheesecake Layer:
  1½ cups cream cheese – Gives a smooth and creamy base.
• ¾ cup sugar – Sweetens the cheesecake and balances flavors.
• ½ cup sour cream – Adds tanginess and richness.
• 2 eggs – Acts as a binding agent for the cheesecake.
• 1 tsp vanilla extract – Enhances the overall flavor.
• 1 tsp cinnamon – Infuses warmth and spice.

Apple Filling:
3 large diced apples (such as Granny Smith or Honeycrisp) – Provides natural sweetness and texture; these apples hold their shape well during baking.
1 tbsp lemon juice – Prevents the apples from browning and adds brightness.
¼ cup brown sugar – Offers a deeper, molasses-like sweetness to the filling.
½ tsp cinnamon – Enhances the apple flavors with a comforting spice.
¼ tsp nutmeg – Adds warmth and complexity to the mix.
Pinch of salt – Balances the sweetness and enhances flavors.

Crisp Topping:
1 cup oats – Adds a chewy texture and nutty flavor.
½ cup flour – Helps bind the topping together with a crumbly texture.
½ cup brown sugar – Contributes sweetness and contributes to the caramelized effect when baked.
½ tsp cinnamon – Complements the other spiced components.
½ cup melted butter – Binds the topping ingredients together while adding richness.
¼ tsp salt – Balances sweetness.