Lemon Sponge Pie
["2 Tbsp. flour", "1 Tbsp. margarine", "1 c. sugar", "3 Tbsp. lemon juice", "2 egg yolks", "1 c. milk", "2 egg whites", "1 (9-inch) unbaked pie shell"]
["Mix together flour, margarine and sugar; add juice, egg yolks and milk.", "Beat egg whites until stiff and fold in last. Pour into pie shell.", "Bake at", "350\u00b0", "for", "40", "minutes or until knife comes out clean and the top is crusty looking."]
["flour", "margarine", "sugar", "lemon juice", "egg yolks", "milk", "egg whites", "shell"]