COMBINE cookie mix, flour, butter and egg in medium bowl. Stir until soft dough forms. Roll dough on lightly floured surface to 1/4-inch thickness. Cut out shapes with a 2 or 3-inch egg shaped cookie cutter. Place 2 inches apart on cookie sheet.
BAKE 9 to 11 minutes or until edges are light golden brown. Cool 2 minutes on cookie sheet. Remove to wire rack to cool completely.
For Glaze: STIR powdered sugar, orange juice, water and orange peel in medium bowl until smooth. Add a few drops warm water if glaze is too thick. Dip tops of cookies in glaze, scraping off excess on edge of bowl. Decorate immediately with sprinkles and sugar.
TIP To soften butter: Heat unwrapped butter in microwave 10 to 15 seconds.