Brown sausage and onions in frying pan.
Peel and slice potatoes thinly.
Mix meat and veggies, including the potatoes and put into a baking dish. Drain the sausage first.
Mix soup and water with salt and pepper and pour over meat and vegetable mixture.
Top with cheese.
Bake at 350 for 1 hour covered then uncover and bake for 1 hour more or until potatoes are done.