Cream cheese & sugar till smooth. Beat the eggs and add to the mixture slowly. Add condensed milk and gradually add cream. Add lemon and vanilla. Scrape down bowl. Beat at medium speed for 3 minutes. Stop and scrape down bowl and beaters often.
Line 8″ or 9″ springform pan with graham/butter mixture. You can already have wrapped bottom of the pan with HD aluminum if you wish.
Pour cheesecake mixture in pan. Let sit for 15 minutes.
Place in bain-marie in preheated oven at 300F. Bake 1 1/2 hours. ***Switch off oven and let sit for 1 1/2 hours. DO NOT OPEN OVEN DOOR. Remove and chill in refrigerator.