Pre-heat the oven to 325°F. and grease a 9-inch springform pan.
Use a large roasting pan that’s bigger and longer than the springform pan.
If springform pan will not hold up in water, wrap the outside of the springform pan in heavy duty aluminum foil from bottom up to the sides.
Using an electric mixer, start beating cream cheese and sugar on medium-high speed until smooth, about 2 minutes.
Add vanilla extract, and sour cream; mix until combined.
Add eggs, one at a time, beating after each addition; scrape sides and bottom of the bowl and beat until all incorporated.
Lower speed and add corn starch; while on medium-low speed, pour in heavy cream.
Mix until all combined, scrape the sides and bottom of the bowl and mix again until smooth.
Cut vanilla bean lengthwise and scrape out the seeds into the cheesecake batter; mix well until incorporated throughout.
Spoon all of the cheesecake batter into the springform, over the jam.
Place roasting pan into the oven and place the cheesecake springform pan inside the roasting pan.
Carefully add water to the roasting pan, about half way up the side of the springform.
Place in oven and bake for 70 - 75 minutes.
Turn off the oven and open the oven door half way; let cheesecake rest for about 10 minutes and take it out of the roasting pan and carefully take off the foil.
Let it rest for 20 minutes on the counter and then gently run a greased butter knife between sides of the cheesecakes and the springform to carefully separate it.
It is not necessary to take the cheesecake out of the pan until ready to add topping.
Cool cheesecake for an hour.
Spread remaining cranberry jam over the top of the cheesecake.
Cover the pan with saran wrap and place the cheesecake in the refrigerator.
Refrigerate for at least 4 hours before adding the mousse.