In another mixing bowl, beat the heavy cream, powdered sugar and vanilla until stiff peaks form. Set this aside for a moment.
In a separate mixing bowl, beat together the cream cheese and sugar until smooth. Then add the sour cream and crunchy Biscoff, again beating to combine.
Add the whipped cream to the cream cheese mixture and fold with a spatula to incorporate.
Transfer this to a piping bag and pipe into the prepared mini muffin pan. (see note)
In a small microwave safe bowl, microwave the smooth Biscoff in 10 second intervals, stirring after each until it is smooth and runny. Allow this to cool slightly so that it is not hot. (see note)
Spoon the Biscoff over the individual cheesecakes and gently smooth to the edges. (see note)
Place the cheesecakes in the refrigerator to chill and set for at least 4 hours, or overnight.