Last year they had a Rugby Player Cake and a Three Tier Unicorn Cake. This year, they opted for a joint cake.
Each sponge consisted of a mix and a half of the recipe and baked in a 23.5cm square tin. As the mix was larger, I decreased the temperature down to gas #3 and baked slowly for at least an hour each.
The 'Happy' on this side refused to slide down the side like the 'Birthday' and my nephew's name. But it's refusal to 'conform' has not ruined the overall effect.
The Nutella side was generously doused with gold dust, topped with Ferrero Rocher, some open, some wrapped. The pipping was topped, alternately, with Maltesers plus some chocolate covered popping candy then a few sticks / chunks of Kinder Bueno were added to the sides for decoration.
The vanilla side was doused in silver dust with an added "something" (see below). The piping on this side was sprinkled with sugar stars and some white Kinder Bueno was added to reflect her brother's half. Oh! Plus one or more purple butterflies.