Make your cookie dough according to your cookie recipe. For this recipe, you’ll need about 5 oz. worth of cookie dough. (Refrigerate any extra cookie dough for later use for other cookies!)
Line a baking sheet with parchment paper. On a floured surface, roll out your cookie dough so that it’s about ¼ of an inch thick.
Use a paring knife to cut out a portion of the diamond’s sides. Cut out on an angle: you will want the diamond to look thinner and take the shape of a necktie.
Cut out 12 small rectangles, about ½ an inch in width and ¼ of an inch in length. Place on the top of your cookie necktie.
Place each cookie on your lined baking sheet and bake according to recipe’s directions. Once baked, cool completely on a wire rack.
Roll out each colored fondant until they’re about ¼ of an inch thick each. Cut out 12 small rectangles (the same size that you cut for the top of your tie), and then press it onto the cookie.
Using the same technique you used to shape the cookies into ties (ie.: with the cookie cutter and the paring knife), cut out 12 necktie shapes out of your burgundy fondant. Press the fondant shape onto each cookie.
Cut out strips from your yellow fondant and place on top of each cookie. Trim accordingly.