Sunday morning, a time to indulge yourself with sleep-in and a delicious late breakfast with a cup of aromatic coffee. This breakfast casserole can be prepared the night before, so when you wake up on Sunday morning, just preheat the oven and pop the casserole in for about 30 minutes, and voila, a yummy breakfast is ready for your leisurely enjoyment. Try serving fruit salad with this casserole, and add blueberry muffins to turn this into a mini Sunday brunch. The instructions below may seem to have many steps, but this casserole is really very simple to prepare. To add an egg florentine twist to the dish, you could also add a package of defrosted and drained frozen spinach, spread out evenly just before the cheese layer. You could also replace the sausages with ham, browned pork sausages or browned bacon.