3/4 c. milk
1 can cream of mushroom soup
4 med. potatoes, sliced 1/8 inch thick
1 c. cheddar cheese, grated
1/2 sm. onion, chopped

Combine milk and soup in a microwave safe 2 quart casserole. Stir in remaining ingredients. Cover and microwave on high for 10 minutes. Stir and microwave another 12 minutes or until potatoes are tender. Serves 8.