Preheat your oven to 160°C
Mix the crushed biscuits and melted butter in a bowl until combined.
Press the mixture firmly into the base of a 20–23 cm springform tin, using the back of a spoon or your fingers.
Chill in the fridge while you make the filling.
In a large bowl, beat the cream cheese until smooth.
Add the sugar and beat until well combined.
Add the eggs, one at a time, mixing gently after each addition.
Pour in the double cream and Amarula, and stir until just incorporated — do not overmix.
Pour the filling over the chilled biscuit base.
Tap the tin gently on the counter to release any air bubbles.
Bake for 45–55 minutes, or until the edges are set and the center has a slight wobble.
Switch off the oven, leave the door slightly open, and let the cheesecake cool inside for 1 hour.
Once cooled, refrigerate for at least 4 hours (preferably overnight).
Optional: Drizzle caramel sauce over