01 - Line the base of a 9-inch springform pan with parchment paper.
02 - Combine crushed graham crackers or digestive biscuits with melted butter in a mixing bowl. Press the mixture firmly into the bottom of the prepared pan to create an even crust. Chill in the refrigerator while assembling the filling.
03 - Gently melt white chocolate in a heatproof bowl set over simmering water, stirring occasionally until smooth. Allow to cool slightly.
04 - Beat cream cheese and granulated sugar in a large bowl with a mixer until the mixture is smooth and creamy. Incorporate vanilla extract and lemon juice, mixing until well blended.
05 - In a separate bowl, use a mixer to whip heavy cream until medium-stiff peaks form.
06 - Fold the melted white chocolate into the cream cheese mixture. Gently fold in the whipped cream until the mixture is just combined, taking care not to deflate the whipped cream.
07 - Pour the filling over the chilled crust and smooth the surface with a spatula. Cover and refrigerate for a minimum of 6 hours, or overnight for optimal results.
08 - In a saucepan, combine cranberries, granulated sugar, and water. Cook over medium heat until cranberries burst and the mixture thickens, about 8 minutes. Stir in the cornstarch slurry and cook for an additional 1 to 2 minutes until glossy and just thickened. Cool completely before use.
09 - Spread the cooled cranberry topping over the set cheesecake just before serving. Garnish as desired.