McVitie's Jaffa Cakes Bars are scrumptious blend of luscious dark crackly chocolate, light sponge and smashing orangey centre. They're also only 97 kcal per bar! Each cake bar is individually wrapped so you can enjoy a little break from the everyday anytime, anywhere. . Dark Chocolate, Light Sponge with an Orangey Flavour Centre. No hydrogenated vegetable oil. 97 kcal per bar. No artificial colours or flavours. Suitable for Vegetarians. McVitie's.