Heat oven to 400 degrees. Grease cookie sheets. In large bowl, combine sugar and butter; beat until well blended. Add milk, vanilla and egg; beat well. Lightly spoon flour into measuring cup; level off. Add flour, baking powder and cinnamon; mix well. Shape dough into 1-inch balls. On lightly floured surface, roll balls into logs, 6 inches long. Place on greased cookie sheets. Bake at 400 degrees for 5 to 8 minutes or until light golden brown. Immediately remove from cookie sheets. Cool completely. Place melted candy coating in pie pan. Dip logs into candy coating; place on waxed paper to cool. Drizzle melted bittersweet chocolate over logs to resemble birch trees.