1. Heat oven to 375°F. Remove wrappers from chocolates.
2. Stir together cookie mix and cocoa. Add butter and pecans. Work with hands until dough forms a ball. Mold scant tablespoon of dough around each chocolate, covering completely. Shape into balls. Place on ungreased cookie sheet.
3. Bake 10 to 12 minutes or until set. Cool about 1 minute; remove from cookie sheet to wire rack. Cool completely. Roll in powdered sugar. Roll in powdered sugar again just before serving, if desired. Makes about 48 cookies.