Place half of the Biscoff biscuits into a sandwich bag and bash the biscuits into a fine crumb using a rolling pin. Repeat with the remaining Biscoff biscuits. Then, place the crushed biscuits into a small mixing bowl.(Alternatively, you can blitz the biscuits in a food processor)
Melt butter in the microwave and mix into the crushed biscuits.
Pour the biscuit base into a deep springform tin and press down using the back of a wooden spoon or cup ( I used an 8"/20cm tin).Place in the fridge whilst you make the cheesecake filling.
Whisk vanilla extract, double cream, icing sugar and cream cheese until the mixture holds itself (like meringue).
Melt the Biscoff spread in the microwave on a high heat for 30 seconds or until slightly runny but not too hot.
Pour the Biscoff spread into the cheesecake filling and whisk until evenly distributed.
Pour the cheesecake filling into the springform tin with the cheesecake base. With an offset spatula smooth the mixture so it’s nice and even.
Melt the Biscoff spread (for the decoration) in the microwave for 20 seconds, drizzle over the cheesecake and marble using a skewer.
Place the cheesecake in the fridge to set for 6 hours.