Make the crumble topping

• Mix the flour, half of the sugar and a pinch of salt in a bowl.
• Rub in the cold cubed butter with your fingertips until coarse crumbs form.

Prepare the blueberry layer

• Toss the blueberries with the remaining sugar and the lemon juice.

Make the cheesecake filling

• Whisk the softened cream cheese with the egg and vanilla extract until smooth.

Assemble the crumble

• Spread the blueberries in the baking dish.
• Pour the cheesecake filling over the berries.
• Scatter the crumble topping evenly on top.

Bake

• Bake until the topping is golden and the filling is set.

Cool and serve

• Let the crumble cool slightly before serving.