Creating a delicious Blueberry Crumble Cheesecake Pie will be a rewarding endeavor. Follow these steps carefully for the best results:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Crust: In a bowl, combine graham cracker crumbs, granulated sugar, and melted butter. Press the mixture into the bottom of a 9-inch pie dish evenly.
3. Bake the Crust: Bake the crust in the preheated oven for 10 minutes. Remove and let it cool slightly.
4. Make the Cheesecake Filling: In a mixing bowl, beat the softened cream cheese and granulated sugar until smooth. Add the eggs, vanilla extract, and lemon juice, mixing until well combined.
5. Pour Filling into Crust: Spread the cheesecake filling evenly over the cooled crust.
6. Prepare the Blueberry Filling: In a separate bowl, stir together blueberries, sugar, cornstarch, and lemon juice until the blueberries are well coated.
7. Add Blueberries on Top: Spoon the blueberry mixture over the cheesecake filling, spreading it evenly.
8. Make the Crumble Topping: In another bowl, combine flour, brown sugar, rolled oats, and cold butter. Use your fingers or a pastry cutter to create a crumbly texture.
9. Top the Pie: Sprinkle the crumble topping generously over the blueberries.
10. Bake the Pie: Return the pie to the oven and bake for 45-50 minutes until the filling is set and the topping is golden brown.
11. Cool Down: Once baked, remove from the oven and allow it to cool to room temperature for at least 1 hour. For best results, chill it in the refrigerator for an hour before serving.

Following these steps will lead you to a beautifully baked Blueberry Crumble Cheesecake Pie that will have everyone asking for seconds!