Lentil & Root Veggie Soup

French green lentils and black lentils hold up well to long, slow cooking without becoming mushy. Save the rinds from used-up blocks of Parmesan in a resealable plastic bag or tightly sealed container in the refrigerator. They give soup broths a rich, savory flavor.

Ingreadient

  • 3 cups chopped peeled celeriac (celery root)
  • 2 cups chopped parsnips
  • 1 cup chopped carrot
  • 1 cup frozen pearl onions
  • 1 stalk celery, chopped
  • 2 medium plum tomatoes, seeded and chopped
  • 3 cloves garlic, minced
  • 2 teaspoons herbes de provence
  • 8 cups low-sodium chicken broth or vegetable broth
  • 1 cup french green lentils or black lentils, rinsed
  • 1 sprig fresh rosemary
  • 1 tablespoon (3 inch) rind parmesan cheese plus 1/2 cup shredded parmesan, divided
  • 1 medium bay leaf
  • 1 teaspoon salt
  • ½ teaspoon ground pepper
  • 4 ounces pancetta, crisp-cooked and crumbled (optional)