This delicious vegetable stew also tastes great as a main course. Serve with grated parmesan and hot ciabatta bread.
Heat the oil, fry the leek and zucchini for 5 minutes, stirring constantly. Bring to a boil with garlic, tomatoes, tomato paste, bay leaf, broth and garbanzo beans and simmer for 5 minutes.
Cut the spinach into thin strips, add to the soup and cook for another 2 minutes. Season to taste.
Remove the bay leaf, pour the soup into a soup bowl and sprinkle with parmesan. Serve with crusty bread.