If you are using full graham cracker sheets, pulse them in a food processor until you have fine crumbs.
1 ½ cups graham cracker crumbs
Place the graham cracker crumbs in a medium bowl. Mix the sugar and melted butter with the crumbs until they are the texture of coarse sand.
⅓ cup granulated sugar, 6 tablespoons butter
Using a flat-bottomed measuring cup or glass, press the crumb mixture into the bottom and sides of the pan. Wrap the pan with aluminum foil, or place it in a silicone pan wrap.
Bake at 375°F (190°C) for 8 minutes. Remove from the oven and reduce the oven temperature to 325° (165°C).
If the crust has fallen or crumbled then use the measuring cup to press back against the sides while it is still warm
Cheesecake Filling
Beat the cream cheese using an electric mixer at medium-high for 1 minute. Add the sugar and continue beating for 3 minutes. Scrape the sides and bottom of the bowl.
Mix the flour, granulated sugar, brown sugar, and cinnamon in a separate medium bowl. Stir the melted butter into the mixture until you have coarse crumbs.
⅔ cup all-purpose flour, ½ cup packed light brown sugar, ½ teaspoon ground cinnamon, 5 tablespoons butter
Carefully spoon the blueberries evenly across the top of the cheesecake batter. Then add the crumble topping on top of the blueberries.
Pour several cups of water into a large stock pan or tea kettle and bring to a boil.
Place the wrapped cheesecake pan into a large roasting pan. Pour the boiling water into the pan until it reaches 1-inch up the sides of the pan.
Bake at 325¯F (165°C) for 90-100 minutes, or until the cheesecake has set. The edges should be slightly puffed and golden brown and the middle of the cheesecake will still be jiggly. The internal temperature of the cheesecake should be 150°F (66°C).
Turn the oven off and crack open the oven door, allowing the cheesecake to cool for 1 hour without moving it from the oven.
Remove from the oven and discard the foil. Run a knife around the edge of the pan so that the cheesecake does not stick. Place plastic wrap over the top of the cheesecake and transfer to the refrigerator for at least 4 hours or overnight.
Notes
Using room-temperature dairy ingredients will help everything blend smoothly, resulting in the best cheesecake texture.To prevent the water bath from leaking into the springform pan, wrap it with heavy-duty aluminum foil or place it in silicone wrap.Store in the refrigerator for up to 4 days.