This hearty make-ahead breakfast casserole is perfect for feeding a crowd or for easy meal prep. With savory sausage, sharp cheddar, and eggy bread, it's a delicious and satisfying way to start your day.
For best results, allow the casserole to chill overnight. This gives the bread ample time to soak up the egg mixture, resulting in a more flavorful and cohesive casserole. You can also customize this casserole with various vegetables or different types of cheese to suit your taste.