Preparation
Preheat the oven to 350° F. In a large bowl, combine brown potatoes, cream of celery soup, cheddar cheese, sour cream, finely chopped onion. Then, transfer this mixture to a casserole dish. Bake it for about 1 hour, until the top is slightly golden. Then, sprinkle some French fried onions on top and bake for about 5 minutes, until golden brown.