8 c diced potatoes or hash browns
1/2 to 1 lb. American cheese, cubed
1 c mayonnaise
1/2 c onion, chopped
1/2 to 1 lb. bacon, fried and crumbled
salt
pepper

Mix all ingredients together except bacon. Pour into a greased 9x13 pan. Sprinkle with bacon.

Bake at 350°F for 1 hour.