Heat oil in large soup pot. Add onions and saute them for 5 minutes. Add garlic and bay leaf; saute for 1 minute. Add eggplant, wine, tomato paste/water, basil, oregano, rosemary, salt and pepper. Mix well, cover and simmer for 15 minutes. Add peppers, zucchini, and tomatoes. Add a bit more water if necessary. Simmer, covered, until all the vegetables are tender, about 10-15 minutes. Top with your favorite cheese and fresh parsley (optional).