Parmesan Potato Casserole
In a medium saucepan, whisk together the milk, cornstarch, pepper and salt (if using). Bring to a simmer over medium heat, stirring frequently. Reduce the heat to medium-low and cook for 1 minute, or until the sauce has thickened. Reduce the heat to low and gradually whisk in the Parmesan, stirring vigorously to break up any lumps. Cook for 1 minute.
Microwave option: Combine the potatoes, onions and garlic in an ovenproof, microwave-safe 2-quart casserole. Microwave on high for 6 to 10 minutes, or until the potatoes are partially cooked; halfway through the cooking time, give the dish a quarter turn and stir the potatoes. Transfer to a colander to drain.
Comments: Like other cheeses, Parmesan is relatively high in fat. Fortunately, it has a strong flavor, so a modest amount goes a long way. This casserole has only 1/3 cup, yet the flavor is surprisingly rich To speed up the cooking time, you may partially cook the potatoes in the microwave before completing the process in the oven.