To make these biscuits gluten free, substitute the all-purpose flour with a 1:1 gluten-free baking flour blend that contains xanthan gum. Replace the cornmeal with certified gluten-free cornmeal. Ensure the baking powder, baking soda, and cheeses are labeled gluten free. Proceed with the recipe as written, noting that gluten-free dough may be slightly softer and benefit from an additional 2–3 minutes of baking time.