To make these Decadent Pecan Pie Cookies gluten-free. Substitute the all-purpose flour. With your favorite gluten-free flour blend (one that substitutes on a 1:1 basis). Ensure your baking powder. And other additives are gluten-free. For an added touch. You can blend in a teaspoon of xanthan gum with the flour. To help improve the texture. And the integrity of the cookies. Making them as delightful. As their gluten-containing counterparts.