2Add egg mixture. (Tip: shake the pan gently as you move the mixture, so that none sticks to the bottom) Cook in medium heat, once the omelette seems to be cooked, use the lid of the frying pan (or a large plate) to tip the omelette out of the pan, add a little more butter and slide the omelette in again, this time putting the less cooked side first into the pan. If you need to repeat this step, so that the omelette is perfectly cooked and golden on both sides, you may do so. Cut in 8 slices. Depends on how much you like to eat!