While the crust bakes, start making the cheesecake batter. Add the softened cream cheese, granulated sugar and brown sugar to a medium to large mixing bowl.
Use a hand or a stand mixer to cream the sugars and cream cheese together until smooth. Scrape down the bowl once complete.
Add the pumpkin pie spice, salt, flour, vanilla extract and pumpkin puree (everything else BUT the eggs). Mix well until smooth. Scrape down the bowl once complete.
Add the room temperature eggs to the batter and mix on low-medium speed until just combined, then scrape down the bowl one last time to ensure that everything is well incorporated.
Pour the pumpkin cheesecake batter over the baked Biscoff Cookie crust and smooth it out.