To make the perfect omelet, take the ingredients such as the eggs, onions, tomatoes, cheese and ham ready. Spray the pan with butter and use four eggs for a better presentation. Beat the eggs on a bowl and mix in a little amount of fresh milk. Place it on the pan and let it cook for a little while. Wait for the bottom to solidify before placing the rest of the ingredients inside the pan. Place the rest of the ingredients and then keep it boiling. Heat up the oven and place the pan inside for about two minutes. Get a plate ready on hand to remove the omelet from the oven after two minutes and slowly slip it into the plate and then you'll have the perfect omelet.