Fluffy Cheesecake

Directions

1. 1
   Preheat oven to 300 degrees F.
2. 2
   Mix together crust ingredients and press into the bottom of a 9 inch round springform pan.With an electric mixer, beat the cream cheese and sugar until smooth.
3. 3
   Add yolks, sour cream, vanilla, and lemon juice; mix until smooth.Beat egg whites until stiff, and fold into mixture.
4. 4
   Pour over crust.
5. 5
   Bake for 60 minutes at 300 degrees F. Turn off heat, and let cake remain 1 hr longer with door closed. Open door and let cake remain at least 1/2 hour longer.
6. 6
   Let cool at room temperature, then chill overnight. Top with pie filling if desired.