Sauté the chopped onion in a generous amount of olive oil until translucent, being careful not to let them brown. (Here's a tip: a pinch of salt and a tablespoon or so of water helps to soften the onion and prevent the browning.)

Add the sliced zucchini and (if you want) a bit of pureed tomato, season with salt and pepper, mix well and cover, allowing the zucchine to stew, stirring occasionally, about 10 min, or until tender. Add a bit of water if things get too dry.

Finally, uncover the pan and turn off the heat. Add the eggs, which you will have beaten in a bowl together with grated pecorino and chopped basil or parsley, to the pan. Fold the egg mixture gingerly into the zucchini slices, until the eggs have formed a creamy sauce that clings to the zucchini.

Serve with some crusty bread. If you're a cheese maven like myself, you can sprinkle some additional pecorino on top.