Scalloped Potatoes - cooking recipe

Ingredients

8 to 10 medium-size potatoes, peeled and sliced
1 medium onion, sliced and broken into ringlets
12 oz. grated Cheddar cheese
1 can cream of mushroom soup, diluted with 1/2 can of water
salt and pepper
margarine

Preparation

Boil potatoes for 10 minutes.
Layer in a 9 x 13-inch greased baking dish.
Cover each layer of potatoes with onion, cheese, salt, pepper and pats of margarine.
Top with soup.
Bake at 350\u00b0 for 35 minutes.