Add the diced tomatoes, tomato paste, tomato pesto, parmesan rind, vegetable stock, water, carrots, celery, onions, garlic, oregano, rosemary, and bay leaves to a slow cooker. Season with salt and pepper to taste and cook on low heat 6-8 hours or high 3-4 hours.
Step 2
Add in red kidney beans, great northern beans, zucchini, and pasta and cook on high heat for an additional 20- 25 minutes until pasta is tender. Stir in the spinach and green beans and cook for an additional 5 minutes until heated through. Serve warm topped with parmesan cheese and garlic toasts.