1 medium onion
2 tablespoons olive oil
pinch of saffron
100g cheese grated
2 eggs, beaten
salt and pepper to taste
Preheat oven to 190C/375F/ gas mark 5
Gently fry the onion over a low heat for 10 mins, add the saffron and season to taste.
Steam the courgettes until tender, add the onions and place in a baking dish.
In a separate bowl, combine the cheese with the beaten eggs, pour over the vegetables and bake for 20 minutes or until the topping is risen and set.