Combine crumbs, sugar, cinnamon and margarine, press onto bottom of 9-inch springform pan. Bake at 350 degrees F., 10 minutes. Combine cream cheese and sugar, mixing at medium speed on electric mixer, until well blended. Add eggs, one at a time, mixing well after each addition. Blend in vanilla, pour over crust. Toss apples with combined sugar and cinnamon. Spoon apple mixture over cream cheese layer; sprinkle with pecans. Bake at 350 degrees F., 1 hour and 10 minutes. Loosen cake from rim of pan; cool before removing rim of pan. Chill. VARIATION: Add 1/2 Cup finely chopped pecans with crumbs for crust. Continue as directed.