sauces made with just milk or cream are too heavy and oftentimes bland. Choose a good-quality broth for the best flavor. For vegetarian scalloped potatoes, use vegetable broth. Cheddar cheese.

Related: Scalloped Potatoes Potatoes au gratin recipes typically use heavy cream ... Some kind of cheese may be mixed into the cream sauce to thicken and enrich it. Gruyere, Cheddar, and Parmesan ...