Heat a large pot with the olive oil. Add the onion and cook about 4 min, stirring occasionally. Add the salt and garlic and cook about 30 s.
Add the tomatoes, carrot, celery and cook about 4 min.
Pour the broth, potatoes, basil, oregano, thyme. Cover the pot and bring to the boil. Reduce the heat to low and simmer the soup about 8 min. or until the veggies are fork-tender.
Add the beans. Cover the pot, turn off the heat and let sit for a few minutes.
Transfer 1/4 of the soup to a big bowl. Blend until puree. Pour back into the pot.
Add the spinach, garnish with black pepper, salt, drizzle with olive oil. Let the soup sit for a few minutes.
Serve with cheese and toasted bread.