2 lbs. frozen hash browns, thawed
1/2 stick butter, melted
1 tsp. salt
1/2 tsp. pepper
1 can cream of mushroom soup
2 c. Cheddar cheese, grated
2 c. sour cream
1/2 c. onion, chopped (if desired)
Unseasoned bread crumbs

Combine all ingredients except bread crumbs. Pour into a greased 9 x 13 inch baking dish. Bake at 350 degrees for 1 hour.