Preheat oven to 400° . Butter a nine or 10 inch spring form pan line the bottom and sides with graham cracker crumbs . Mix ingredients in electric mixer at medium speed in order listed . Add eggs, 1 at a time, beating well after each addition. Bake for one hour turn off heat lease leave cheesecake in oven for 20 minutes longer then place immediately in refrigerator, do not remove from pan and chill cold .