cookies. (You may need to coat finger with sugar for indentation to remain). Bake for 10-12 minutes or until set. Cool slightly; remove from cookie sheets to wire rack. Cool completely. Spoon about quarter tsp orange filling in each thumbprint. Decorate with green filling to look like stem of a pumpkin. ORANGE AND GREEN FILLING: In a small bowl, combine powdered sugar, softened butter, milk and vanilla. Beat on high until smooth. Remove scant 2 TB of filling. Tint this with green food color; set aside. Add freshly grated orange peel to remaining icing and use red and yellow food coloring to make orange. GHOST COOKIES: Make icing and omit food coloring and orange peel. Decorate cookies to look like ghosts.