01 -
Combine zwieback crumbs, 3 tablespoons sugar, and ground cinnamon in a bowl. Add softened butter and blend until the mixture resembles coarse crumbs.
02 -
Press the crumb mixture firmly onto the bottom and up the sides, about 1 and 1/2 inches, of a greased 9-inch springform pan. Chill in the refrigerator until set.
03 -
In a large bowl, blend ricotta cheese with 1/2 cup sugar until smooth. Add half-and-half cream, flour, lemon juice, lemon zest, salt, and lightly beaten eggs. Stir until fully incorporated.
04 -
Pour the ricotta filling over the prepared crust and smooth the top. Bake at 350°F (175°C) for 25 minutes or until set at the edges but slightly wobbly in the center.
05 -
While the cheesecake bakes, combine sour cream, 2 tablespoons sugar, and vanilla extract in a bowl. Stir until smooth.
06 -
Remove cheesecake from the oven and gently spread the sour cream mixture over the hot surface. Return to the oven and bake for an additional 5 minutes.
07 -
Allow the cheesecake to cool in the pan on a wire rack. Once at room temperature, refrigerate for at least 4 hours before serving to ensure proper texture.