Using a lasagna tray: 1st layer - hash browns. 2nd layer - mix sour cream and mushroom soup together and place on top of hash browns. 3rd layer - onions. 4th layer - bacon. Top with cheese.
Bake in oven covered with tin foil for approximately 1 hour at 325° F.
Take foil off and let cook for another 5 minutes.
Servings: 4 to 6