This is a basic recipe for plain cheese omelettes, however, there are a huge variety of ingredients you could use to add extra flavour, such as GF ham, GF bacon, prawns, mushrooms, tomatoes, onions, herbs, etc. If using herbs, make sure you combine them with the eggs as you beat them. When using ingredients such as prawns, etc., don't forget to make sure they are cooked before adding to your omelette. To make this Lactose-Free, cheese can be replaced with soy cheese. Also, some 'hard cheeses' such as Cheddar, Swiss, Colby and Parmesan have low or no lactose.