Heat oven to 350°F. Line cookie sheets with parchment paper.
For each posy, cut unbaked cookie into 4 wedges. Coat each wedge with different color decorator sugar. Reassemble cookie on paper-lined cookie sheets. Place cookies 1 inch apart on cookie sheets.
Bake 12 to 16 minutes or until edges are golden brown. Immediately press 1 mint candy pointed side down in center of each cookie. Remove cookies from cookie sheets.