Cheesecake, New York

Ingredients

• 2 teaspoons margarine
• 1/3 cup Graham cracker crumbs (about 2 to 3 crackers)
• 1 12-ounce container soft fat-free cream cheese
• 1 8-ounce container fat-free sour cream
• 3 large eggs
• 1 8-ounce container whipped cream cheese
• 2/3 cup sugar
• 1 tablespoon cornstarch
• 1-1/4 teaspoons pure vanilla extract
• 2 teaspoons fresh lemon juice