To make this recipe gluten-free, substitute the all-purpose flour with a 1:1 gluten-free baking flour that contains xanthan gum. Additionally, confirm that your cornmeal is labeled gluten-free, as some brands may be processed in facilities that handle wheat. Because gluten-free flours may absorb liquid differently, you may need to add an additional 1–2 tablespoons of buttermilk if the dough appears dry. Follow the remaining steps as written.