Vegetable soup

Tags: Italian, soup, vegetable, made
This soup is cooked with parmesan rind. It gives it strength and character.
15 steps
3 tablespoons olive oil   cook 25–30 minutes without boiling
3 onions slice finely
6 cloves garlic crush   cook 1 minute
4 tins tomatoes (1.6 kg) drain, deseed, chop   simmer 45 minutes
1 litre cups light chicken stock
1 bunch basil chop roughly, discard stems
400g parmesan with rind
salt and pepper
zucchini slice, blanche   cook 1 minute
croutons
1 loaf country bread (250g)   cut into pieces
1/2 cup olive oil   brush, grill until just golden
1 1/2 tablespoons unsalted butter melt
salt
3 cloves garlic chop finely   sprinkle over, gril 1 minute more
chilli pepper flakes