This isn't so much a recipe as a tip. Most of us make omelettes the same way: wait until the eggs are nearly cooked, then add cheese, vegetables, meat, etc., counting on the heat of the eggs to heat them, and in doing so unnecessarily overcooking the eggs. If, instead, you cover your egg pan with a pot lid, you can add the omelette filling from the outset and it cooks WITH the eggs, so your omelette's already done at the point where you'd normally add the filling. And get this - you never have to touch a utensil! Try it and I bet you'll never cook an omelette without a lid again.