These rich chocolate cupcakes are stuffed with Ferrero Rocher chocolates, topped with silky Nutella buttercream, chopped hazelnuts, and more Ferrero Rocher chocolates on top! The cupcakes have a rich chocolate flavour and always turn out super fluffy. The chocolate is baked right into the cupcake which makes stuffing them so much easier.This recipe makes 16 Ferrero Rocher cupcakes instead of 12 because of the extra batter the chocolates end up displacing. If you only have 1 cupcake tin, just reserve the leftover batter and bake the last 4 cupcakes after the first batch is ready.