How to Make It
Preheat oven to 325°F with racks in upper and lower thirds. Using a rubber spatula, stir together all ingredients in a medium bowl until smooth. Roll dough into 18 balls and place 2 inches apart on 2 parchment-lined baking sheets. Bake cookies, rotating 180° and top to bottom until cookies are set but still airy and very soft to the touch, about 8 minutes. Cool on baking sheets 5 minutes; transfer cookies to a wire rack, and cool completely, about 20 minutes.