For best crinkles, ensure the dough is well-chilled for at least 30 minutes. Don't overbake to keep them soft and chewy. Ube halaya and ube extract can be found in most Asian markets. If you can't find ube extract, a little more ube halaya or vanilla can be used, though the color won't be as intense.
Keyword Ube, Filipino, cookie, dessert, purple yam, crinkle, sweet, snack, baking