Prepare lentils: Rinse and drain the lentils, removing any small pebbles or other debris. Set aside.
1 pound lentils
Sauté onions: Heat oil in a large Dutch oven or pot over medium-high heat. When oil is fragrant, add onions and sauté for 3-4 minutes.
1 tablespoon extra virgin olive oil, 1 yellow onion
Brown turkey: Add ground turkey and seasonings and begin browning meat. After 2-3 minutes, add celery, carrots, and onion and continue sauteing another 2-3 minutes.
Simmer soup: Add lentils, crushed tomatoes, broth, bay leaf, and balsamic vinegar. Once simmering, reduce heat to medium and maintain a simmer for 30 minutes, stirring occasionally. Add chopped kale and simmer an additional 5-10 minutes. If too much liquid is evaporating out, add up to another 1-2 cups of broth or water.
28 ounces crushed tomatoes, 8 cups chicken broth, 1 tablespoon balsamic vinegar, 1 bay leaf, 3 cups chopped kale
Serve: Once the vegetables and lentils are tender, the soup is done. Let cool a few moments, then serve. If desired, garnish with freshly grated parmesan. Enjoy!