To make Forfar Birdies gluten-free. Simply substitute the puff pastry. Or empanada discs. With a gluten-free version. Ensure that the beef stock and Dijon mustard. Are also gluten-free. As some brands may contain gluten. You can find gluten-free puff pastry. At specialty stores. Or make your own. Using a gluten-free flour blend. Follow the same instructions. Keeping in mind. That gluten-free pastry dough. Can be a bit more delicate. So handle it gently. The result will be just as delicious. With a flaky, savory crust. That everyone can enjoy.