1 stick butter cut in chunks
2 lb. hash browns, thawed
1 pkg. Cheddar cheese (grated)
1 c. cut up onion
1 can cream of chicken or celery or mushroom soup
1 (16 oz.) container sour cream
Salt and pepper

Mix all ingredients together. Bake at 400 degrees for 1/2 hour and at 350 degrees for 1 more hour. Makes large casserole.