To make this Melting Sweet Potatoes Recipe gluten free, verify that the chicken broth is certified gluten free or clearly labeled gluten free. Confirm that the maple syrup, chopped pecans, butter, salt, and black pepper are free from gluten-containing additives or cross-contact warnings. Sweet potatoes are naturally gluten free. Use clean cookware, utensils, and a clean baking dish to prevent cross-contact with gluten-containing foods.