Unicorns, especially rainbow-hued ones are trending. Impish, pastel colored sugar cookies are another sort of gold at the end of the rainbow and another sort of unicorn but unlike Starbucks Unicorn Frappe, these cookies are around as long as you continue to bake them. Roll up a stack of different colored doughs into a log. Then slice in round cookies, and then half again to form rainbow shapes and bake. These are bakery style, dense, buttery and crisp cookies that capture your eye and your heart in a single glance.