Rich chocolate cookies get some Mexican flair when spiced up with cinnamon, cloves and cayenne pepper. Blanched almonds or pistachios can be used instead of cherries.
Preheat oven to 350°F. Lightly butter 2 large baking sheets. Place powdered sugar in shallow pan. Form dough into 1-inch balls. Roll each ball in sugar to coat; shake off excess sugar. Arrange cookies on prepared baking sheets, spacing 1 1/2 inches apart. Press 1 cherry half into center of each cookie. Bake until cookies puff and crack but are still soft, about 10 minutes. Transfer cookies to rack and cool completely. (Cookies can be prepared ahead. Store in airtight container at room temperature up to 1 week, or freeze up to 1 month.)