Slow-Cooker Vegetable Soup

Name: Slow-Cooker Vegetable Soup
Total time: 4 h 35 min
Yield: 8 servings
Ingredients: 1 onion medium, chopped; 2 medium carrots chopped; 2 stalks celery chopped; 12 ounces fresh green beans cut into ½-inch pieces; 4 cups chopped kale; 2 medium zucchini chopped; 4 roma tomatoes seeded and chopped; 2 cloves garlic minced; 30 ounces cannellini beans no-salt-added, rinsed; 4 cups chicken broth low-sodium, or low-sodium vegetable broth; 2 teaspoons salt; 1/2 teaspoon ground pepper; 2 teaspoons red wine vinegar; 8 teaspoons prepared pesto