Potato Gratin
] Servings: Serves: 4 to 6 as a main dish Source: Paola Gavin/French Vegetarian Cooking Ingredients 2 pounds potatoes 1 medium onions 1/4 cup milk 1/4 cup vegetable broth salt black pepper freshly ground 12 ounces gruyere cheese, grated (Substitute sharp cheddar for some of the gruyere if