To make this Steak Tips with Peppered Mushroom Gravy gluten-free, replace the egg noodles with certified gluten-free noodles or rice. Use a certified gluten-free 1:1 flour blend or cornstarch slurry instead of all-purpose flour to thicken the gravy. Replace the soy sauce with gluten-free tamari or certified gluten-free soy sauce. Confirm that the beef broth, cooking spray, butter, mushrooms, thyme, steak, salt, and pepper are gluten-free and free from cross-contact warnings. Use clean cookware, utensils, cutting boards, and serving tools to prevent gluten contamination.