BAKED MASHED POTATOES
Mix together two cupfuls of hot mashed potatoes, half a cupful of cream or milk, two tablespoonfuls of butter, the yolk of one egg, and the whites of four, and salt and pepper to season. Beat very light, folding in the stiffly beaten whites last. Turn into a buttered baking-dish, brush with the beaten yolk of egg, and brown quickly. Or, arrange mashed potatoes in layers in a buttered baking-dish, alternating with lumps of butter and grated Parmesan cheese. Have cheese and butter on top. Brown in the oven and serve in the same dish.