This classic sausage and egg casserole is a perfect make-ahead breakfast or brunch option. With savory sausage, custardy eggs, and cheesy bread, it's a crowd-pleasing dish that's easy to prepare.
For best results, prepare this casserole the night before and let it chill in the refrigerator overnight. This allows the bread to fully soak up the egg mixture, leading to a perfectly custardy texture and preventing a soggy bottom. You can also customize this casserole by adding vegetables like bell peppers or spinach, or a pinch of red pepper flakes for a little heat!