Potato Casserole - cooking recipe

Ingredients

1 large (2 lb.) hash brown potatoes
1/2 c. onion, sauteed in butter
1 stick butter
1 pt. sour cream
1 (10 3/4 oz.) can celery soup
2 c. grated cheese
2 c. crushed cornflakes
1/2 stick melted butter

Preparation

Mix first 6 ingredients together.
Pour into a square casserole dish.
Bake at 350\u00b0 for 1 hour.
Mix cornflakes and butter.
Put on top of casserole.
Bake at 325\u00b0 for 30 minutes or until crisp.