This vegetable-packed minestrone soup recipe is inspired by a popular Weight Watchers vegetable soup recipe. It makes a big pot of soup, so keep some in the refrigerator for up to 5 days and freeze the rest in single-serve portions. That way you always have an easy, delicious vegetable soup to start your meal or to eat for lunch.
Heat oil in a large soup pot or Dutch oven (8-quart or larger) over medium heat. Add onions, celery, bell pepper and garlic; cook, stirring frequently, until softened, 13 to 15 minutes. Add cabbage, cauliflower, carrots and green beans; cook, stirring occasionally, until slightly softened, about 10 minutes more.
Add broth, water, tomato sauce, tomatoes, beans and bay leaf; cover and bring to a boil. Reduce heat and simmer, partially covered, until the vegetables are tender, 20 to 25 minutes. Stir in spinach and simmer for 10 minutes more.
Discard the bay leaf. Stir in basil. Top each portion with 1 tablespoon cheese.