Kit Kat Baked Cheesecake White Chocolate Made in Japan. Cheesecake is a sweet dessert consisting of one or more layers. The main, and thickest layer, consists of a mixture of soft, fresh cheese, eggs, and sugar. If there is a bottom layer, it often consists of a crust or base made from crushed cookies, graham crackers, pastry, or sometimes sponge cake. KIT KAT Japan is one of the most popular Japanese snacks in the world. Kit Kat Cheesecake White Chocolate is a limited version, available only for a limited time. It has a sweet cheesecake flavor creating slightly sour taste mixed with beautiful white chocolate on crispy wafer.