Follow these steps to create your delicious Blueberry Crumble Cheesecake:

1. Preheat Oven: Preheat your oven to 325°F (160°C).
2. Make the Crust: In a bowl, combine graham cracker crumbs, melted butter, sugar, and salt. Press the mixture evenly into the bottom of a 9-inch springform pan.
3. Bake the Crust: Bake the crust in the preheated oven for 10 minutes. Remove and let it cool.
4. Prepare the Cheesecake Filling: In a large mixing bowl, beat the softened cream cheese until smooth. Gradually add 1 cup of granulated sugar and blend well.
5. Add Eggs and Vanilla: Add the eggs one at a time, mixing on low speed. Stir in the vanilla extract and sour cream until smooth and creamy.
6. Fold in Blueberries: Gently fold in the fresh blueberries into the cheesecake mixture, being careful not to break them.
7. Pour Filling into Crust: Pour the cheesecake filling over the cooled crust, spreading it evenly.
8. Prepare Crumble Topping: In a bowl, mix the flour, oats, brown sugar, softened butter, cinnamon, and salt until crumbly.
9. Top Cheesecake: Sprinkle the crumble mixture over the cheesecake filling evenly.
10. Bake Cheesecake: Place the cheesecake in the oven and bake for 55-60 minutes or until the edges are set but the center has a slight jiggle.
11. Cool the Cheesecake: Once baked, remove from the oven and let it cool on a wire rack for at least one hour.
12. Chill: Cover the cheesecake and place it in the refrigerator for at least 4 hours or overnight for best results.

Using these steps, your Blueberry Crumble Cheesecake will turn out deliciously creamy and perfectly balanced in flavor, making it a dessert you are sure to be proud of.