They ordered the costco cheese cake with the lattice heart dessign. sprinkled the cake with fine crystal sugar to give it a shimmery effect. Costco Heart Lattice Costco Bakery Makes an Excellent Cake | Addicted To Costco! Simple techniques are all you need for this lovely cake: dots, lines. Mark 1 1/2 in. from top edge and trace heart shape for lattice with toothpick.