PREPARATION:
- Beat brown sugar and oil in large bowl with electric mixer at medium speed until well blended. Add sour cream, egg and vanilla; beat until well blended.
- Combine flour, cocoa, espresso, baking soda, salt and pepper in medium bowl. Add flour mixture to brown sugar mixture; beat until well blended. Cover dough; refrigerate 3 to 4 hours or until firm.
- Preheat oven to 350°F. Place powdered sugar in shallow bowl. Shape dough into 1-inch balls. Roll balls in powdered sugar; place 2 inches apart on ungreased cookie sheets.
- Bake 10 to 12 minutes or until tops of cookies are firm to touch. (Do not overbake.) Remove to wire racks to cool completely.
