Creating your Blueberry Crumble Cheesecake is straightforward if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 325°F (160°C).
2. Prepare the Crust: In a mixing bowl, combine graham cracker crumbs, melted butter, and granulated sugar. Press the mixture into the bottom of a 9-inch springform pan. Bake for 10 minutes. Remove from oven and let it cool.
3. Make the Filling: In a large bowl, beat the softened cream cheese until smooth. Gradually add granulated sugar and vanilla extract, mixing well.
4. Add Eggs: Add the eggs one at a time, mixing on low speed until just combined.
5. Incorporate Sour Cream: Stir in the sour cream until smooth. Gently fold in the fresh blueberries.
6. Fill the Crust: Pour the cheesecake filling over the cooled crust in the springform pan.
7. Bake: Bake in the preheated oven for 50-60 minutes, or until the center is set but still slightly jiggly.
8. Cool the Cheesecake: Turn off the oven and crack the door, allowing the cheesecake to cool gradually for about an hour. Then, refrigerate for at least 4 hours or overnight.
9. Prepare the Crumble Topping: In a mixing bowl, combine flour, brown sugar, oats, softened butter, and cinnamon. Mix until crumbly.
10. Top the Cheesecake: After the cheesecake has chilled, sprinkle the crumble topping evenly over the top.
11. Serve: Slice and serve chilled, garnished with additional fresh blueberries if desired.

These steps will guide you in creating an incredible Blueberry Crumble Cheesecake that is sure to satisfy your sweet tooth!