Hash Brown Casserole

Ingredients:
1 medium onion, chopped
1 (2 lb) package refrigerated shredded hash brown potatoes or frozen shredded hash brown potatoes, thawed
1 pint sour cream
2 (10.75 oz) cans condensed cream of celery soup (or cream of mushroom)
1 - 1 1/2 cups shredded Cheddar cheese
1/4 - 1/2 tsp black pepper
1 TBS hot pepper sauce, more if you like
3/4 cup french fried onions or crushed buttery crackers, optional

Instructions:
Preheat oven to 350 degrees F. Grease one 9x13 inch baking dish.
Over medium heat, cook the onion until soft.
In a large bowl, combine the onion, potatoes, sour cream, soup, cheese, pepper and hot sauce. Mix well and pour into baking dish. Bake 50 minutes.
Sprinkle french fried onions over casserole if desired or top with shredded cheese and and bake for 20-30 more minutes.