1 (30 ounce) package frozen shredded hash brown potatoes, thawed
1 (13 ounce) package fully-cooked polish sausage (such as Hillshire Farm Polska Kielbasa)
1 1/2 cups shredded cheddar cheese
1 cup sour cream
1 medium onion, diced
1/4 cup butter, melted
1/4 teaspoon pepper
1/4 teaspoon salt
1 (10. 5 ounce) can condensed cream of chicken soup