Potato Casserole - cooking recipe

Ingredients

1/2 c. chopped onion
8 oz. sour cream
1 can cream of chicken soup
1 can cream of celery soup
8 oz. shredded Cheddar cheese
1 (2 lb.) pkg. hash browns, thawed
1/2 stick margarine
Parmesan cheese

Preparation

Combine first six ingredients.
Pour into greased 9 x 13-inch dish.
Cover top with pats of butter and sprinkle with Parmesan cheese. Bake uncovered for 1 hour at 350\u00b0.