Peel the carrots, clean the celery. Wash and chop both. Peel and chop onion and garlic. Fry everything in hot oil. 3⁄4 Add l water, stir in broth and frozen beans and bring to the boil. Cover and simmer for 5-8 minutes.
Rinse and drain the white beans. Clean and wash the zucchini, cut in half lengthwise and cut into slices. Add beans, zucchini and chunky tomatoes and continue cooking for about 5 minutes. Season to taste with salt and pepper. Wash basil, pluck leaves and sprinkle on the soup. Serve with grated parmesan and ciabatta.