This cake doesn't stop at chocolate sponge. Our Chocolate Hazelnut Cake from Sweet Reserve Bakery in Lombard is layered with silky hazelnut frosting and crunchy crushed Ferrero Rocher bits. A coating of smooth white buttercream covers the exterior, while hazelnut frosting swirls and extra Ferrero Rocher pieces decorate the top. Chocolate and hazelnut take the lead in every slice.