Prep: Add the chicken breasts to the bottom of your slow cooker.
Top with diced celery, onion, and carrots for that classic soup base.
Pour in the chicken stock, cannellini beans (juice and all), diced tomatoes, garlic, Italian seasoning, salt, and pepper. Place your bay leaves on top.
Cook: Cover and cook on low for 4-6 hours, or until the chicken is fully cooked and easily shredded.
Shred: Remove the chicken, shred it with two forks, and return it to the pot.
Stir in the heavy cream to add that creamy Tuscan touch.
Finish: Let it simmer on low for another 30 minutes to meld the flavors together. Serve with freshly grated Parmesan or mozzarella and some warm garlic bread.