Ingredients
Equipment
Method
Make the crust
- Preheat the oven to 325°F. Press graham cracker crumbs, sugar, and melted butter into a 9-inch springform pan, then bake for 8 minutes and cool.
Mix the cheesecake filling
- Beat cream cheese and granulated sugar until smooth. Add eggs one at a time, then mix in sour cream, vanilla extract, and lemon zest until fully combined.
Assemble with blueberry topping
- Pour the cheesecake batter over the cooled crust. Combine fresh blueberries, sugar, cornstarch, and lemon juice, then spoon the mixture over the batter.
Add the oat crumble
- Mix rolled oats, all-purpose flour, brown sugar, and cold cubed butter with your fingertips until clumpy. Scatter the crumble generously over the blueberry layer.
Bake with a water bath
- Bake the cheesecake in a water bath at 325°F for 55-65 minutes, until the center barely jiggles (like set gelatin).
- Turn off the oven and cool the cheesecake inside with the door cracked for 1 hour, until the edges look set and the top is no longer glossy.
Chill and serve
- Refrigerate at least 4 hours to fully set the cheesecake. Unmold and serve for clean slices with visible creamy interior and blueberry jam beneath the crumble.
Notes
For the silkiest texture, keep the water bath warm and avoid boiling, and don’t overbake—stop when the center barely jiggles. Store covered in the refrigerator for up to 4 days; freeze the baked, fully chilled cheesecake for up to 2 months (thaw overnight in the fridge) before serving. For a lighter option, use reduced-fat cream cheese instead of full-fat cream cheese; the bake time stays the same but the set may be slightly softer.
