To make these Oatmeal Cranberry Pecan Cookies gluten free, replace the all-purpose flour with a gluten-free 1:1 baking flour blend and use certified gluten-free oats. Be sure to check that the white chocolate chips, cinnamon, vanilla, baking soda, and any other packaged ingredients are certified gluten free, since some brands may contain additives or be exposed to gluten during processing. If you are baking for someone with celiac disease or a strong gluten intolerance, make sure your cookie sheets, mixing bowls, utensils, cooling racks, and work surfaces are thoroughly cleaned before preparing the dough.