Slow Cooker Minestrone Soup

Ingredients (19)

• 1 small red or yellow onion
• 2 small carrots
• 2 celery stalks
• 4 cloves garlic
• 1 1/2 cups fresh green beans
• 1 28 oz can diced tomatoes, with juices
• 6 cups vegetable broth
• 1 15 oz can red kidney beans, rinsed and drained
• 1 15 oz can cannellini beans or Great Northern beans, rinsed and drained
• 2 bay leaves
• 1 teaspoon dried oregano
• 1 teaspoon dried basil
• 1/2 teaspoon dried rosemary
• 1/8 teaspoon red pepper flakes
• 1 small zucchini
• 1/2 cup dried whole wheat elbow pasta
• 1 cup chopped fresh spinach
• Salt and black pepper
• Freshly-grated Parmesan cheese