Ham and Lentil Soup

Bahan-bahan (6 porsi)

• 3 cups reduced-sodium fat-free chicken broth
• 3 cups water
• 1½ cups chopped celery
• 1½ cups (about 3 medium) sliced carrots
• 1 cup dried lentils, (rinsed)
• 6 ounces cooked ham, (diced finely (about 1½ cups))
• 1 medium onion, (chopped)
• 1 tablespoon chopped fresh thyme
• 3 cups baby spinach leaves
• salt and freshly ground black pepper, (to taste)
• Parmesan cheese, (for topping (optional))