01 -
In a large bowl, combine graham cracker crumbs and granulated sugar. Add melted butter and stir until the mixture is evenly moistened.
02 -
Press the graham cracker mixture evenly across the bottom of a 9x13 inch baking dish. Place the dish in the freezer for several minutes to firm up the crust while you prepare the filling.
03 -
In a medium bowl, beat together softened cream cheese, powdered sugar, vanilla extract, and sour cream until completely smooth and combined.
04 -
In a chilled bowl, pour in the cold heavy whipping cream. Beat on medium-high speed until stiff peaks form.
05 -
Gently fold the whipped cream into the cream cheese mixture, taking care to retain the aeration.
06 -
Spread the cheesecake filling evenly over the chilled graham cracker crust. Use an offset spatula to smooth the surface.
07 -
Place the assembled cheesecake in the refrigerator for at least 4 hours or in the freezer for a minimum of 2 hours to allow the filling to set.
08 -
In a medium saucepan, combine blackberries, granulated sugar, vanilla extract, ground cinnamon, water, and cornstarch. Stir to combine and bring to a boil over medium heat, stirring constantly.
09 -
Once boiling, reduce heat and simmer for 8 to 10 minutes, stirring occasionally, until the blackberries have broken down and the sauce has thickened to a jam-like consistency. Remove from heat and cool completely.
10 -
Spread the cooled blackberry topping evenly over the chilled cheesecake filling. Cut into individual squares and serve.