Heat olive oil in a large stockpot. Add onion, garlic, carrot, and celery. Cook for about 5 minutes, or until lightly browned. Add in zucchini, green beans, and diced tomatoes.
Stir in vegetable broth, beans, basil, oregano, and thyme. Simmer on low for 20 minutes.
Add the pasta and cook until tender, about 12 to 15 minutes. If you need to add more broth, you can.
Season soup with salt and pepper. If you want a little heat, you can add crushed red pepper flakes. Ladle the soup into bowls and garnish with parmesan cheese and fresh basil, if desired.