Boil at least 4 cups of water. You will need 1 inch of water in your roasting pan for the water bath. I typically use an entire kettle full of hot water.
Wrap the bottom of your springform pan with several layers of heavy-duty foil.
Pour the cheesecake filling over the cooled crust. Use a rubber spatula to smooth it into an even layer.
Place the filled springform pan in the larger cake or roasting pan.
Set the pans on the middle rack in the oven. Carefully pour the boiling water into the larger pan until it is about 1 inch deep. Close the oven door.
Bake the cheesecake for 50-55 minutes until the top of the cheesecake looks set but not browned. The cheesecake should wobble slightly when jiggled.
Turn the oven OFF and allow the cheesecake to continue baking for 15 minutes.
Crack open the oven door about an inch (holding it open with a wooden spoon if needed) and allow the cheesecake to cool slowly for 45 minutes.
Remove the cheesecake from the oven and set it on a cooling rack. Remove the foil and run a thin knife around the edge to release the cheesecake from the pan.
Allow the cheesecake to cool at room temperature for an hour. Cover the pan with foil and refrigerate for at least four hours or overnight.
When you are ready to serve, unlatch the springform pan and remove the sides. Cut the cheesecake into 12 slices. For neater slices wipe the knife clean and dip into warm water between each slice.