New York Cheesecake

Crust 1/2 cup sugar 11/2 sticks butter 11/2 cups flour 1Tbs. lemon zest 1 teas. vanilla Cheese Filling 4 Pkgs {8oz.}cream cheese 1 cup sugar 2 eggs 1 Tbs. Lemon juice 11/2 teas.vanilla 2 Tbs. corn starch 1 cup Sour Cream For crust  cream butter & sugar well,add flour,lemon zest,and vanilla Pat into bottom & sides of well buttered 9inch springform pan, bake in a pre -heated 400* oven 15 - 20 min until light  brown. cool on rack Filling Cream together cheese & sugar,Add eggs,lemon juice,Vanilla, corn starch, Mix well. fold in sour cream & pour into crust. Bake 45 to 50 min. , center will be a little loose  if cake browns to fast cover with foil . leave in oven with door open& heat turned off untill cool. top with berries to serve.