To make this recipe gluten free, replace the all-purpose flour with a gluten-free flour blend that is suitable for dredging and frying. Also verify that the seasoning salt, beef broth, cornstarch, and canned mushrooms are certified gluten free, as some packaged products may contain additives or be subject to cross-contact. If preparing this dish in a shared kitchen, use clean cookware, utensils, and surfaces to prevent gluten contamination.