To make these Almond Crescent Cookies gluten-free, substitute the all-purpose flour with a high-quality 1:1 gluten-free baking flour blend that contains xanthan gum. Verify that your almond flour and other ingredients are certified gluten-free. The dough may be slightly softer, so consider chilling it for 20–30 minutes before shaping to make it easier to handle. The result will still be tender, buttery, and delicately nutty — just as delicious as the original.