1/3 cup butter (no substitutes)
1 cup packed brown sugar
2/3 cup unsweetened cocoa powder
1 tablespoon instant coffee granules
1 teaspoon baking soda
1 teaspoon ground cinnamon
2 egg whites
1/3 cup low-fat vanilla yogurt
1 1/2 cup all-purpose flour
1/4 cup granulated sugar
Beat butter in a large mixing bowl with an electric mixer on medium to high speed for 30 seconds. Add brown sugar, cocoa powder, coffee granules, baking soda and cinnamon; beat until combined, scraping sides of bowl occasionally. Beat in egg whites and yogurt until combined. Beat in as much of the flour as you can with the mixer. Stir in remaining flour with a wooden spoon.
Place granulated sugar in a small bowl. Drop dough by teaspoons into sugar and roll into balls. Place balls 2 inches apart on an ungreased cookie sheet. Bake at 350 degrees F for 8 to 10 minutes until edges are firm. Transfer to wire racks; cool.
Makes about 40.