large fennel bulb, trimmed • medium zucchini • extra-virgin olive oil, divided • salt • whole-wheat penne or similar short pasta • cooked cannellini beans • garlic, finely chopped • bean-cooking liquid, pasta-cooking liquid or water (see Step 5) • plum tomatoes, diced • crumbled hard, aged goat cheese, or fresh goat cheese • fresh mint leaves • Freshly ground pepper
