1 can Campbell's Cheddar cheese soup
1/2 c. milk
4 c. sliced potatoes (approximately 4 lg. potatoes)
1 sliced onion
1 tbsp. butter
Paprika

Stir soup and milk together until smooth - spray 1 1/2 quart casserole with Pam. Layer potatoes, onions, and soup-milk mixture. Dot with butter. Sprinkle with paprika. Bake covered at 375 degrees until done (approximately 1 1/2 hours). Note: You can cut potatoes very thin to cook faster.