Crunchy Almond Butter Oatmeal Cookies

"[Photograph: Carrie Vasios Mullins] These almond butter cookies have a crisp, crunchy texture and are gluten-free. Why this recipe works * * Oats add just enough binding to keep these cookies together while still letting them be light and crisp (and gluten-free). * Vanilla and brown sugar compliment the flavor of the almonds and give the cookies a depth of flavor. * Leftovers can be smashed up and sprinkled over vanilla ice cream for a repurposed treat. * Note: These cookies will look slightly under-baked when you take them out of the oven but they will harden as they cool, so leave them on the baking sheet for at least 15 minutes before moving...."