Potatoes au Gratin
Dice enough cold boiled potatoes to measure one pint. Put one tablespoonful of butter and the same amount of flour in a saucepan with a little salt and pepper. Cook till well mixed, then add one cupful of milk and stir until smooth and thick. Add the potatoes and simmer five minutes, then pour into a buttered, shallow baking dish. Mix one scant cupful of fine, dry bread crumbs with one tablespoonful of melted butter, spread over the potatoes and place in a hot oven until the crumbs are a golden brown, then serve hot.