In a food processor blitz the Biscoff biscuits into fine crumbs, then put in a bowl.
In a microwave melt the melt the butter and then mix together with the biscuit crumbs.
Using an 8 cavity cylinder silicone mold, put a tablespoon of butter/biscuit mix in the bottom of each cylinder and press down/level out using the bottom of a small/shot glass. Put the mold in the fridge to chill whilst making the filling.
In a large bowl mix together the cream cheese, 200g of the biscoff spread and the apple sauce.
In a seperate bowl whisk together the whipping cream icing sugar, until soft peaks form. Add to the cheese mix and gently fold in, until fully combined.
Now spoon the cheese filling into each of the cylinders of the mold and smooth, leaving a 2mm gap at the top of each one. Place in the mold fridge to chill for 1 hour.
In a microwave melt the rest of the biscoff spread in a jug for 10-20 seconds (until runny), then pour the liquid into each mould until just full, then place the mold in the freezer over night.
To turn out each cheesecake from the mold push upwards from the bottom.
In a bowl whisk together the whipping cream, icing sugar and vanilla extract, until it forms a thick cream. Spoon the cream into a piping bag (with the tip of your choice).
Sprinkle the top of each cheesecake with popping candy, then pipe whipped cream on top of each cheesecake.
Finally, if you have any left-over biscoff biscuits, you can crumble the biscuits and sprinkle the crumbs over the cream topping and serve.