1 (2 lb.) pkg. hash brown potatoes 1/2 c. melted butter 1/4 tsp. salt 1/2 c. chopped onion 1 pt. sour cream 1 can mushroom soup 2 1/2 c. grated Cheddar cheese
Mix all ingredients. Pour into greased long casserole dish. Bake at 350 degrees for one hour.