Pepper
Salt
2 cups Cooked diced or shredded chicken
1 teaspoon Fresh thyme leaves
1 teaspoon Baking powder
1 teaspoon Salt
1 cup Whole milk divided
4 cups Chicken stock / broth
1 1/4 cups All-purpose flour divided
1 Onion diced
2 stalks Celery plus their leaves diced
2 Carrots diced small
4 tablespoons Butter divided