Pour the extra virgin olive oil, diced onions and diced tomatoes in to a pan. Then put the green beans in a pan and stir them.
Add the sugar, black pepper and salt and water and stir all and close the lid. Cook over medium-low heat about 35 minutes.
Serve hot or cold.
Tip: I always prefer olive oiled dishes to be served cold. Let the dish rest in the refrigerator for an hour or some. You will taste the difference.