Valentine Cheesecake

Prepare a heart-shaped pan with cooking spray; set aside. To prepare crust, combine crumbs, margarine, and three tablespoons sugar in a mixing bowl. Mix well. Press into bottom of prepared pan. Chill one hour, or until firm. Preheat oven to 350. Meanwhile, to prepare filling, combine cream cheese, remaining sugar, lemon juice, and egg whites. Mix well. Pour mixture over top crumb mixture in pan. Place the pan in a larger pan. Pour enough water to come one inch up the sides of heart pan. Bake for one hour and ten minutes. Remove heart pan from water bath to a cooling rack. When cool run a small knife around edges of cake. Cover top with wax paper. Place wire rack over the top of cake; carefully invert pan and rack. Carefully, remove pan. Place serving plate, upside down, over the crumb bottom of cake; invert the plate, cake, and rack. Remove rack and wax paper. Cover and refrigerate until chilled. Spread pie filling over top and serve.