Instructions

  1. Put onion, carrots, celery and potatoes in a large saucepan with broth to cover by at least 2 inches. Bring to a boil and simmer, stirring occasionally, for 15 minutes, adding a little more water if necessary.
  2. When vegetables are just about tender, add beans, zucchini and tomatoes and simmer for another 20 minutes or so.
  3. Meanwhile, combine garlic, basil, olive oil and tomato or tomato paste in a blender or food processor and process until pasty. Season with salt and pepper.
  4. About 10 minutes before the vegetables are done, add pasta to soup and cook until tender but not mushy; season again. Serve soup and pass pistou and parmesan at the table.