Creating the perfect Blueberry Crumble Cheesecake Pie is simple if you follow these steps carefully:

1. Preheat the Oven: Set your oven to 350°F (175°C).

2. Prepare the Pie Crust: In a medium bowl, mix the graham cracker crumbs, melted butter, and granulated sugar until combined. Press the mixture firmly into the bottom and sides of a 9-inch pie dish.

3. Bake the Crust: Place the pie crust in the oven and bake for 8-10 minutes, until it’s lightly browned. Remove and set aside to cool.

4. Make the Cheesecake Filling: In a large bowl, beat the softened cream cheese and granulated sugar until smooth. Add in the eggs, vanilla extract, and lemon juice. Mix until everything is well combined and creamy.

5. Prepare the Blueberry Filling: In another bowl, combine the fresh blueberries, granulated sugar, cornstarch, and lemon juice. Gently mix to coat the blueberries evenly.

6. Layer the Ingredients: Pour the cheesecake filling into the cooled pie crust, spreading it out evenly. Then, add the blueberry filling on top of the cheesecake layer, making sure to distribute the blueberries evenly across the surface.

7. Prepare the Crumble Topping: In a separate bowl, combine the flour, oats, brown sugar, softened butter, and cinnamon. Mix until crumbly and well-combined.

8. Add the Crumble Topping: Sprinkle the crumble mixture evenly over the blueberry filling.

9. Bake the Pie: Place the pie in the oven and bake for about 40-50 minutes. The cheesecake should be set, and the crumble should be golden brown.

10. Cool the Pie: Once done, remove the pie from the oven and allow it to cool at room temperature for 10-20 minutes. Then, refrigerate for at least 3 hours before serving for the best texture.