Melt butter in a large 8-quart stockpot. Add onion, garlic, and celery; sauté over medium-high heat 3 minutes. Add chicken broth and next 5 ingredients. Bring to a boil; reduce heat, and simmer 20 minutes, stirring occasionally.
Drop Cornbread Dressing Dumpling Dough by tablespoonfuls into simmering soup. Cook 5 minutes. Cover and cook 15 more minutes or until dumplings are done.