To enjoy this delectable Easy Onion Gravy in a gluten-free version, a few simple tweaks are all that's needed. Replace the regular beef broth with a certified gluten-free beef broth to ensure no hidden gluten sneaks into your gravy. The key substitution, however, lies in the thickening agent - instead of cornstarch, opt for a gluten-free flour blend or arrowroot powder. These gluten-free alternatives work wonderfully to achieve the desired consistency without altering the rich flavor profile of the gravy. Be mindful of the Worcestershire sauce as well; some brands contain gluten, so it's best to check the label or switch to a gluten-free alternative.