Lemon Sponge Pie
["1 c. white sugar", "2 Tbsp. flour", "butter (size of walnut)", "2 egg yolks", "1 lemon", "1 c. milk", "2 egg whites"]
["Cream together sugar, flour and softened butter until smooth. Add 2 slightly beaten egg yolks, juice of lemon and milk.", "Fold in beaten thick egg whites and then pour into pie shell.", "Bake at 450\u00b0 for 8 minutes and at 325\u00b0 for 20 to 25 minutes."]
["white sugar", "flour", "butter", "egg yolks", "lemon", "milk", "egg whites"]