In an oven proof omellete pan, caramelise the red onions slowly
Meanwhile, boil the sweet potatoes and blanch the broccoli
When the onions are nicely brown, top with the sweet potato and broccoli or other vegetables
Beat 5 eggs and add a handful of grated cheese if you like.
Season the egg mixture and pour evenly over the vegetables in the pan
Cover the pan and cook on the stove for a few minutes and then put the pan under a hot grill for another 2-3 minutes until the egg is set.
Alternatively, you can put the whole pan in the oven for about 20 minutes or until the eggs are set at 180°C.