Ingredients
Equipment
Method
Bake the crust
- Preheat the oven to 325°F. Press graham cracker crumbs, sugar, and melted butter into a 9-inch springform pan and bake for 8 minutes, then cool.
Make the cheesecake batter
- Beat softened cream cheese and granulated sugar until smooth. Add the eggs one at a time, mixing after each, then mix in sour cream, vanilla extract, and lemon zest until glossy and fully combined.
- Pour the cheesecake batter over the cooled crust. Tap the pan gently to help the surface settle into an even layer (visual cue: no dry crust patches showing).
Add the blueberry layer
- Combine fresh blueberries, sugar, cornstarch, and lemon juice until the berries are coated and the mixture looks lightly thickened. Spoon the blueberry mixture over the cheesecake batter (visual cue: blueberries spread across the top in an even layer).
Top with oat crumble
- Mix rolled oats, all-purpose flour, brown sugar, and cold cubed butter with fingertips until clumpy. Scatter the crumble over the blueberry layer so it covers generously from edge to edge (visual cue: irregular oat clusters, not a smooth powder).
Bake in a water bath
- Bake in a water bath at 325°F for 55–65 minutes until the center barely jiggles. The edges should look set while the middle still has a gentle wobble (visual cue: a slight jiggle like set custard).
- Cool the cheesecake in the oven with the door cracked for 1 hour. This gradual cooling helps prevent cracking (visual cue: top looks matte, not puffed or watery).
Chill and serve
- Refrigerate the cheesecake at least 4 hours until fully chilled and firm. Unmold and serve with the crumble shattering cleanly at each slice (visual cue: defined layers, creamy interior, jam visible beneath crumble).
Notes
For the smoothest texture, keep the water bath steady and avoid boiling the water—gentle heat is key at 325°F. Store covered in the refrigerator up to 5 days; freeze unfrosted slices in an airtight container up to 2 months. For a lighter option, use reduced-fat cream cheese in the same amounts (texture stays creamy, though slightly softer).
