To make these Oklahoma Sooner Nut Candies gluten free, verify that the vanilla extract, baking soda, butter, and any packaged pecans are labeled gluten free, since additives and cross-contact can vary by brand. The main ingredients are naturally gluten free, but if gluten is a concern, use clean cookware and utensils that have not been in contact with gluten-containing ingredients. Once the ingredient labels are confirmed, this recipe is very easy to keep gluten free.