You can easily turn these Gingerbread Cookie Bars into a delight making sure that everyone can enjoy this festive treat. The key is to use a high-quality gluten-free flour blend instead of regular flour. Look for a blend that can be used as a one-to-one substitute, for flour. Contains rice flour, potato starch and xanthan gum to replicate the texture and binding properties of wheat flour. Also make sure that your baking powder and spices are certified gluten-free to avoid any sources of gluten.