PREPARATION:
- Preheat oven to 350°F. Combine flour, cocoa, coffee granules, baking soda and cinnamon in large bowl; set aside.
- Beat butter 30 seconds at medium speed of electric mixer until creamy. Beat in brown sugar and sour cream on medium-low speed until well blended. Add egg, egg white and vanilla; beat on low speed until well blended.
- Gradually add flour mixture to butter mixture, beating on low speed until well blended.
- Drop dough by level teaspoonfuls onto ungreased cookie sheet. Flatten cookies slightly with bottom of glass. Bake 6 minutes. Cool 5 minutes on cookie sheet. Remove to wire rack; cool completely. Dust with powdered sugar, if desired.
- For icing, heat half-and-half, chocolate and coffee granules in small saucepan over low heat, stirring until chocolate melts. Cool slightly. Drizzle icing over cookies. Cool until icing is firm.
