Easy Chicken & Dumplings with stalks

6 cups chicken broth 1 (10 1/2 ounce) can cream of chicken soup 2 carrots , diced 2 stalks celery , diced 1 medium onion , diced 2 cups shredded cooked[...]

3 tablespoons butter 1 large onion , diced 1 cup diced carrot 1 bell pepper , diced (red or green) 2 stalks celery , diced (optional) 3 tablespoons flour 1[...]