Alternate adding scoops of the vanilla batter, and the chocolate batter into the prepared pan. You will have more vanilla, so add scoops that are twice as big, or two scoops of vanilla for every scoop of chocolate.
Swirl the cheesecakes together lightly with a butter knife to create a marble pattern.
Tap the pan on the counter a couple times to release air bubbles, then smooth the top out again.
Place the spring form pan into a 10inch cake pan, then place that into a large roasting pan filled with about 1 inch of hot water.
Bake the cheesecake in the preheated oven for 60-80 minutes, or until the sides are completely set and the center is slightly jiggle.
Turn the oven off and crack the door open slightly, leaving the cheesecake in the warm oven for 1 hour.
Remove the cheesecake from the oven and let it cool completely to room temperature, for about 2 hours.
Cover the cheesecake and place it in the fridge to chill for at least 6 hours, overnight is preferred.
Run a thin knife around the edges of the cheesecake to loosen it from the pan, then carefully release the springform pan.
Cut the cheesecake into slices and enjoy, topped with whipped cream, fresh fruit, chocolate syrup, etc.