This video shows recipes for four kinds of adorable Diamant cookies, perfect for Halloween. Prepare the dough in vanilla, pumpkin, purple sweet potato, and black cocoa flavors. Mix butter and powdered sugar, add egg yolk, then add cake flour, the respective flavor powder, and almond flour to each dough and mix. After chilling the dough in the refrigerator, shape it into cylinders, sprinkle with granulated sugar, and bake at 160°C for 25 minutes. Once baked, decorate the cookies with Halloween-themed designs using chocolate pens. These cookies have a crispy texture and are perfect as gifts for events.