To prepare a gluten-free version of this recipe, use certified gluten-free croissant dough, now available at most specialty or health food stores. Confirm that all toppings, particularly chocolate or flavored spreads, are gluten-free as well. Cook the croffle as directed, but handle the dough carefully—gluten-free pastry tends to be more delicate. The result will still yield a crisp, flaky texture with the same caramelized sweetness.