This sheet pan frittata is a simple, customizable, and nutritious breakfast option perfect for meal prep or feeding a crowd. With a quick 10-minute prep time and hands-free baking, you get a delicious, protein-packed meal in just 35 minutes.Try different veggie, protein, and cheese combinations to make it your own. Whether you enjoy it fresh or store it for later, this frittata is a must-have for busy mornings!