To make these cookies gluten-free. Simply swap the regular flour. For a gluten-free all-purpose blend. I recommend using one that contains xanthan gum. To help hold the dough together. Keeping the cookies soft and light. Make sure your other ingredients, like cornstarch and jam. Are certified gluten-free as well. The result will be just as delicious—soft, buttery cookies. With the perfect strawberry filling—without the gluten!