To give our Company Chicken Casserole a gluten-free twist you can make a few simple substitutions. Just use gluten-free herb flavored stuffing mix. Make sure to choose a cream of chicken soup that is certified gluten-free. By making these adjustments you'll be able to enjoy the comforting flavors and creamy textures without any concerns, about gluten. Take your time. Savor every bite of this casserole that is also friendly, to those following a gluten-free diet.