Step 1: Prepare the Base
Crush the digestive biscuits into fine crumbs using a food processor or rolling pin.
Mix the crumbs with melted butter until it resembles wet sand.
Press the mixture into the base of a 20cm (8-inch) springform tin. Chill in the fridge while you prepare the filling.
Step 2: Make the Filling
Beat the softened cream cheese until smooth and creamy.
Add the double cream and continue beating until the mixture is thick but spreadable.
Stir in the icing sugar, lemon zest, lime zest, lemon juice, lime juice, and vanilla extract. Taste and adjust if necessary.
Step 3: Assemble the Cheesecake
Spoon the filling onto the chilled biscuit base and smooth the top.
Optionally, swirl lemon curd into the filling for added flavor and a beautiful marbled effect.
Chill the cheesecake for at least 4 hours, preferably overnight, until fully set.
Step 4: Serve and Enjoy
Remove the cheesecake from the tin and place it on a serving plate.
Garnish with extra lime zest and serve. Enjoy with fresh fruit, honey, or lemon curd for an extra touch.