DIRECTIONS

In a small mixing bowl, beat butter and sugar until crumbly, about 2 minutes. Add eggs and 1/2 teaspoon vanilla; mix well. Combine the flour, cocoa, baking powder, baking soda and salt; beat into butter mixture. Stir in raisins (dough will be sticky).
    Divide dough in half. With lightly floured hands, shape each portion into a 12-in. x 2-in. rectangle; place each on a baking sheet coated with cooking spray. Bake at 350° for 18-22 minutes or until set and tops begin to crack. Carefully remove to wire racks; cool for 5 minutes.
    Transfer to a cutting board; cut with a serrated knife into scant 3/4-in. slices. Place cut side down on ungreased baking sheets. Bake for 5 minutes. Turn and bake 5-7 minutes longer or until firm. Remove to wire racks to cool.
    In a small bowl, combine the confectioners' sugar, remaining vanilla and enough milk to achieve a drizzling consistency. Transfer to a small resealable plastic bag; cut a small hole in a corner of bag. Drizzle over biscotti. Let stand until set. Store in an airtight container. Yield: 3 dozen.