I start by mixing the graham cracker crumbs with melted butter and sugar until everything feels evenly moist. The mixture should resemble wet sand and hold together when pressed. I firmly press it into the bottom of the springform pan, creating an even base. Baking the crust briefly helps it stay crisp under the creamy filling.
I beat the softened cream cheese until it’s completely smooth before adding sugar. This step is key to avoiding lumps later. Then I gently mix in sour cream, heavy cream, and vanilla, keeping the speed low so I don’t add too much air. Eggs go in last, one at a time, just until combined.
I pour the filling over the cooled crust and smooth the top. Baking at a moderate temperature allows the cheesecake to set evenly without cracking. I look for set edges and a slightly jiggly center before turning off the oven. Letting it cool slowly helps maintain a smooth surface.
While the cheesecake cools, I cook blueberries, sugar, and lemon juice in a saucepan until the berries burst. I stir in cornstarch slurry and let it simmer until thick and glossy. The topping should coat the back of a spoon without being too stiff.
Once everything has cooled, I spread the blueberry topping evenly over the cheesecake. Chilling it for several hours allows the flavors to blend and the texture to firm up. This final rest is what makes each slice clean and picture-perfect.