Before you start, preheat the oven to 350°F/180°C. Spray a 9-inch springform pan with baking spray, line with parchment paper, and set aside.
Microwave chopped white chocolate in a bowl for about 2 minutes, stirring every 30 seconds until melted. Set aside to cool.
226 grams chopped white chocolate
Stir graham cracker crumbs, brown sugar, and salt together in a large mixing. Pour in the melted butter and mix until the mixture is coated in butter.
160 grams graham cracker crumbs, 73 grams brown sugar, ¼ teaspoon salt, 113 grams unsalted butter
Press the graham cracker mixture into the bottom and up the sides of the springform pan. Bake for 10 minutes.
Take the crust out of the oven and lower the heat to 325°F/165°C. Prepare the water bath by filling a roasting pan or oven-safe skillet with hot water and placing on the lowest oven rack.
For the cheesecake filling, beat cream cheese and sugar together in the bowl of a stand mixer or hand mixer until smooth.
680 grams full fat cream cheese, 140 grams granulated sugar
Beat in the melted chocolate, vanilla, cornstarch, and salt on low until creamy. Scrape the sides of the bowl and beat in the sour cream.
2 teaspoon vanilla extract, 1 tablespoon cornstarch, ¼ teaspoon salt, 140 grams sour cream
Beat in the eggs one at a time, scraping the sides of the bowl after the second and third egg. Then mix the batter with a rubber spatula to pop air bubbles.
3 large eggs
Pour the filling over the graham cracker crust and smooth out the top. Place on the oven rack above the water bath and bake for 55-70 minutes. The cheesecake is done when the edges are set and the center jiggles like Jell-O.
When the cheesecake is done, turn off the oven and let the cheesecake cool inside with the door cracked open for 1 hour. Transfer to the top of the oven and cool for 1 hour, then cover with plastic wrap and refrigerate for 6 hours or overnight.
Once chilled, release the sides of the springform pan. Pull off the parchment paper and transfer to a cake stand. Spread 1 cup of strawberry jam on top.
300 grams strawberry jam
Garnish with fresh strawberries and white chocolate curls or white chocolate chips. Slice and serve!