1 cup firmly packed brown sugar
2/3 cup unsweetened cocoa
4 teaspoons instant coffee granules
1 teaspoon baking soda
1 teaspoon ground cinnamon
1/3 cup vanilla yogurt
1 1/2 cups all-purpose flour
Coarse grain sugar or sugar
Heat oven to 350ºF.
Place butter into bowl; beat at medium speed 30 seconds. Add brown sugar, cocoa, coffee granules, baking soda and cinnamon. Continue beating, scraping bowl occasionally, until well mixed. Add yogurt and egg whites; continue beating until well mixed. Add flour; beat at low speed until well mixed.
Place coarse grain sugar into bowl.
Shape teaspoonfuls of dough into 1-inch balls; roll in sugar to coat. Place balls, 2 inches apart, onto ungreased cookie sheets. Bake 8-10 minutes or until edges are firm. Remove cookies to cooling rack; cool completely.
Dough can be chilled until firm, if too soft to shape into balls, if desired.