1Heat oven to 350°F. Spray cookie sheets with cooking spray. In large bowl, beat brown sugar, shortening and molasses with electric mixer on medium speed until well blended. Beat in eggs. Stir in remaining cookie ingredients until well blended. (Dough will be sticky.)
2Drop dough by rounded teaspoonfuls about 1 inch apart onto cookie sheets.
3Bake 7 to 9 minutes or until light golden brown. Remove from cookie sheets to cooling racks. Cool completely, about 20 minutes.
4In small bowl, mix icing ingredients until smooth. Drizzle icing over cookies.