Beat cream cheese and sugar until smooth and light.
Beat in eggs, vanilla, and cornstarch.
Stir in sour cream.
Pour into crust.
Bake in oven on 450F for 10 minutes.
Reduce (leaving the cheesecake in the oven) oven temp to 225F and bake for 45 minutes.
Turn off oven and allow to cool for two hours in oven with door ajar.
Run a knife around border of pan and release spring form. Cake is much easier to cut at room temperature before refrigerating.