This make-ahead breakfast casserole is a perfect dish for busy mornings. Packed with eggs, cheese, sausage, and vegetables, it is a hearty and nutritious meal that can be prepared in advance. The casserole is baked to perfection, resulting in a golden and fluffy texture. It can be stored in the refrigerator and reheated easily, making it a convenient option for those on the go. Serve it with a side of fresh fruit or a dollop of sour cream for a delicious and satisfying breakfast.