How to Make Antiprism Cookies! October 30, 2021 Lauren Urban Today we will be making this shape out of cookies! Materials Needed: Tube of cookie icing, 8 triangular-shaped cookies, 2 square cookies. The length of the square cookie must be equal to the length of the triangle cookie. Use 1 square cookie as the base. Add a thick layer of icing around the edges of the square. Start adding triangle cookies to each edge of the square. Add icing to help stick the cookies together. Use toothpicks to help support the triangles as you continue working. Post navigation Previous PostTalkin’ BattyNext PostAntiprism-tastic!