French Pesto Soup

Ingredients

• 1 onion, finely chopped
• 1/3 cup (75 ml) olive oil
• 5 cups (1.25 litres) chicken broth
• 2 zucchini, cut into pieces
• 1 potato, peeled and cut into pieces
• 1 carrot, peeled and diced
• 1 cup (250 ml) canned white beans, rinsed and drained
• 1 cup (250 ml) green beans, cut into 3/4-inch (2-cm) pieces
• 1/2 cup (125 ml) freshly grated Parmesan cheese
• 4 cloves garlic
• 2 tomatoes, coarsely chopped
• 1/2 cup (125 ml) fresh basil
• Salt and pepper