Birthday Cakes : Olaf In Summer Cake ( Olaf is made of Rice Krispie Treats’s and fondant. The ombre waves were inspired by a Royal Bakery. By Luana - January 29, 2019 0 3484 Birthday Cakes : Image : Description Olaf In Summer Cake ( Olaf is made of Rice Krispie Treats’s and fondant. The ombre waves were inspired by a Royal Bakery.