01 - Line the base of a 9-inch springform pan with parchment paper.
02 - Combine crushed graham crackers and melted butter in a bowl until thoroughly moistened. Press mixture evenly and firmly into the prepared pan. Refrigerate while you make the filling.
03 - Gently melt white chocolate in a heatproof bowl set over simmering water. Cool slightly before using.
04 - In a large mixing bowl, beat cream cheese and granulated sugar until smooth and creamy. Add vanilla extract and lemon juice; mix until fully incorporated.
05 - In a separate bowl, whip heavy cream to medium-stiff peaks using a hand mixer or stand mixer.
06 - Gently fold the melted white chocolate into the cream cheese mixture. Carefully fold in the whipped cream using a rubber spatula until just combined.
07 - Pour the cheesecake filling onto the chilled crust. Smooth the surface, cover, and refrigerate for at least 6 hours, preferably overnight.
08 - Combine cranberries, sugar, and water in a saucepan. Cook over medium heat until cranberries burst and mixture thickens, about 8 minutes. Stir in the cornstarch slurry and simmer 1–2 minutes until glossy and slightly thickened. Cool completely before use.
09 - Spread cooled cranberry topping over the chilled cheesecake just before serving.