Preheat oven to 375 degrees F (190 degrees C). Lightly grease a 9x13 inch baking dish.
In a large bowl, mix hash browns, sausage, cream of potato soup, sour cream, and cheddar cheese. Spread evenly into prepared dish. Bake 1 hour in the preheated oven, or until bubbly and lightly brown. Serve immediately.