These were described to me as ferrero rochers, they are less like ferrero rochers and more like a chocolate bite hence the name. Using your HEb in a different way like the scan bran cake can heed great results. If you're running out of syns sometimes it's better to make something out of it rather than having it as it is to get a treat.
2x weetabix crushed (HEb) and 2 tbsp of chocolate spread melted (8syns) then mix up and make 8 balls and they'll be 1syn each. You don't have to eat them all at once as they are quite sweet but if you want to go for it!