01 -
Preheat the oven to 350°F (175°C). Line the bottom of a 9-inch springform pan with parchment paper. Wrap the outside of the pan tightly with foil to prevent water from leaking in during the water bath.
02 -
In a medium bowl, mix graham cracker crumbs, sugar, and melted butter. Press the mixture evenly into the bottom and up the sides of the prepared pan. Bake for 8 minutes, then set aside to cool. Increase oven temperature to 400°F (200°C).
03 -
In a large bowl, beat cream cheese until smooth. Add sugar and cornstarch, and beat until fluffy. Mix in eggs, yolk, sour cream, heavy cream, and vanilla until just combined.
04 -
Place the springform pan in a larger roasting dish. Pour the filling into the crust. Pour boiling water into the roasting dish until it reaches halfway up the sides of the springform pan. Bake at 400°F (200°C) for 10 minutes, then reduce heat to 230°F (110°C) and bake for 1 hour.
05 -
Turn off the oven and crack the door open slightly. Let the cheesecake cool in the oven for 1 hour, then remove and cool completely on the counter. Refrigerate for at least 8 hours or overnight.
06 -
In a saucepan, combine half the strawberries, sugar, lemon juice, and cornstarch. Cook over medium heat until thickened. Remove from heat, stir in the remaining strawberries, and let cool. Refrigerate until ready to use.
07 -
Remove the cheesecake from the pan, spread the strawberry topping over it, and serve with whipped cream if desired.