tuscan vegetable soup

Ingredients

• 1 can cannellini or other small white beans, drained and rinsed
• 1 tablespoon olive oil
• 1 cup onions
• 1/2 cup carrots
• 2 sticks (stalks) celery use leaves too
• 1 small zucchini
• 1 clove garlic
• 1 tablespoon fresh thyme (or 1 tsp dried)
• 2 tablespoons fresh sage (or 1/2 tsp dried)
• 1/2 teaspoon salt (+/- to taste)
• 1/4 teaspoon pepper (+/- to taste)
• 4 cups low-sodium chicken or vegetable broth
• 1 can diced tomatoes w/juices (14.5 oz can)
• 2 cups baby spinach leaves chopped
• 1/2 cup parmesan cheese (optional)