Potato Casserole - cooking recipe

Ingredients

8 medium potatoes, diced
1 can cream of mushroom soup
1 onion, diced
1/2 c. water
1/2 c. grated cheese
1/2 stick margarine
salt and pepper to taste

Preparation

Boil potatoes for about 15 minutes.
Butter casserole dish. Mix ingredients; bake, covered, at 400\u00b0 for about 30 minutes.