This is the ultimate set-it-and-forget-it comfort food. A creamy, cheesy, and satisfying casserole made with simple ingredients that cooks itself in the slow cooker, perfect for busy weeknights or feeding a crowd.
For a vegetarian version, use cream of mushroom soup. Do not thaw the hash browns, as this will make the casserole soggy. Letting the casserole rest before serving is key for the perfect scoop. Add cooked sausage, bacon, or ham for a heartier meal.