This comforting and satisfying recipe for crockpot chicken and dumplings is perfect for a cozy night in. Start by processing onions, garlic, carrots, and celery in a food processor until finely chopped. Then, add the mixture to a crockpot along with chicken breasts, chicken broth, and seasonings. Cook on low for 6-8 hours, or until the chicken is cooked through and the vegetables are tender. Add dumplings and cook for an additional hour. Serve hot with a side of green beans.