A classic fluffy omelet relies on a simple technique to achieve its signature height and airy texture. Separating the eggs and whipping the whites to stiff peaks creates a light, cloud-like base that bakes beautifully in the oven. The gentle folding of the yolks and whites ensures the mixture stays voluminous before it hits the hot skillet. It makes a wonderful weekend breakfast or a comforting, protein-rich lunch. You can easily customize the finished dish by adding a handful of shredded cheese during the final minute of baking.