625g cream cheese (2 ½ blocks, 250g each), at room temperature
150g granulated sugar (¾ cup)
3 large eggs, at room temperature
80ml plain full-fat sour cream (⅓ cup)
10ml lemon juice (2 tsp)
5ml pure vanilla extract (1 tsp)
8g all-purpose flour, sifted to remove lumps (1 tbsp)
300g fresh or frozen blueberries (2 ⅓ cups)
12g granulated sugar (1 tbsp)
5g all-purpose flour (2 tsp)
5ml lemon juice (1 tsp)
60g powdered confectioner’s sugar (½ cup)
10ml blueberry juice, pressed from fresh or frozen blueberries (2 tsp)
5ml lemon juice (1 tsp)
Instructions
Preheat oven to 175°C (350°F). Lightly grease the sides of an 8-inch round springform pan and line the bottom with parchment paper.
Combine 180g flour, brown sugar, salt, cinnamon, and nutmeg in a bowl. Add cooled melted butter and mix until clumpy. Set aside 1 ¼ cups and mix oats into it for the crumble topping.
Mix 3 tbsp remaining flour into the main mixture to form the crust. Press it into the prepared pan, covering the base and 1-inch up the sides. Bake for 10-12 minutes or until lightly golden.
Reduce oven temperature to 160°C (325°F) after removing the crust.
Cream softened cream cheese using an electric mixer until smooth. Blend in sugar, then mix in eggs one at a time. Incorporate sour cream, lemon juice, vanilla, and flour without over-mixing.
Toss blueberries with sugar, flour, and lemon juice until evenly coated.
Pour cheesecake batter into the pre-baked crust. Distribute blueberries evenly on top without pushing them down. Sprinkle crumble topping over the surface.
Bake at 160°C (325°F) for 50 minutes. Turn off the oven and let it rest for an additional 15 minutes. Adjust cooking time for a 9-inch pan if necessary.
Transfer the pan to a wire rack. Run a knife around the edges to release the sides, then cool completely and refrigerate for at least 4 hours or overnight.
Combine powdered sugar, blueberry juice, and lemon juice in a bowl. Whisk until smooth and drizzle over the cheesecake before serving.
Notes
For a creamier texture, ensure the cream cheese is at room temperature.
Can be served chilled or at room temperature.
Test the doneness of the cheesecake by gently shaking the pan; the center should slightly jiggle.