“Au Gratin Potatoes About 5 lbs thinly sliced potatoes 2 large thinly sliced onions 1½-2 cups grated sharp cheddar or imported Swiss 1 cup chicken stock Salt and pepper A 9- by 13-inch baking dish Preheat oven to 350 degrees. Butter baking dish. Put in layer of thinly sliced potatoes, then the thinly sliced onions. Sprinkle with salt and pepper, then sprinkle on cheese. Continue this way until you have three more layers ending with cheese. Pour in one cup of chicken stock. Cover pan with foil, bake one hour. Uncover pan bake another ½ hour.”