Blueberry Jam
Cheesecake Batter
Crust
Biscoff Crumble
Whipped Cream:
In a small saucepan, combine the blueberries, sugar, lemon juice, and vanilla.
Cook on medium heat until the berries burst and the mixture begins to thicken (about 8-10 minutes).
Stir in the pectin or agar agar and continue to simmer for 2–3 more minutes.
Let the jam cool for 30 minutes before adding to the batter.
Make the jam
Preheat the oven to 350°F.
Mix graham cracker crumbs, sugar, cinnamon, and melted butter in a bowl until the mixture resembles wet sand.
Press into the bottom of a springform pan, going slightly up the sides.
Par-bake for 10 minutes and let cool while preparing the batter.
Prepare the crust
In a large bowl or stand mixer, cream the softened cream cheese, sugar, and salt until smooth (2-3 minutes).
Add eggs one at a time, mixing fully after each addition. Then add vanilla, lemon juice, and flour. Mix just until combined-do not overbeat.
Tip: Crumble the lemon zest into the sugar first with your fingers to release the oils for extra lemony flavor.
Make the cheesecake batter
In a separate bowl, cream together the softened butter and sugar.
Mix in the vanilla, flour, Biscoff crumbs, and salt until a crumbly streusel forms. Don't overmix; this should stay chunky.
Prepare the biscoff streusel
Pour half the cheesecake batter into the prepared crust.
Spoon half the cooled blueberry jam on top and swirl it in gently with a knife or toothpick.
Repeat with the remaining batter and jam.
Top the batter evenly with the Biscoff crumble.
Assemble the cheesecake
Wrap the outside of the springform pan tightly with aluminum foil to prevent water from leaking in.
Place the pan into a larger baking dish and pour hot water into the outer dish, halfway up the sides of the springform.
Bake at 350°F for 60 minutes. Then turn the oven off, crack the oven door open, and let the cheesecake gradually cool in the oven for 1 hour.
Transfer to the counter to cool for another hour, then refrigerate for 6 hours or overnight before slicing.
Pipe and decorate to your liking with whipped cream, extra blueberries, lemon slices, and a sprinkle of lemon zest.
Bake
Tip: Will the crumble cook evenly without burning? Yes! The water bath creates steam, which helps the cake cook gently and evenly while preventing the crumble topping from burning.
