3 slices day-old sourdough bread, cubed, to form croutons .
3 tbsps sliced Italian parsley (flat leaf) .
6 garlic cloves, crushed plus .
2 leeks, thoroughly washed & sliced .
2-3 tbsps balsamic vinegar .
pecorino cheese, grated .
1 kg yellow onions (Americans) or brown onions (Australians) .
butter (optional) .
2 (400 ml) cans tomatoes, drained & sliced .
6 c chicken stock (or vegetable) .
fresh ground black pepper, to taste
Directions
Step #1 Heat the oil in a non-stick pot & sauté the garlic, regularly stirring & scraping the bottom of the pot, leek & onions for about 30 mins until golden brown, turning down the heat after about 10 mins.
Step #2 (You may need more oil if you are not using a non-stick pot).