Split and fill
the cakes with butter icing. Cut the square cake in
half and cut, using the round cake tin as a guide, a
rounded end from one rectangle to fit around the
round cake. Trim the cakes to the same depth and
assemble the number on the cake board. Brush with
apricot jam and cover with a thin layer of marzipan.
Tint 450g
of the sugar-paste icing yellow and the
rest green. Cover the cake with the yellow
icing. With the cutter, mark a circle in the
centre of the round cake. Cut out a green
sugar-paste icing circle. Stick in place with
water and leave to dry overnight.
Mark a track the
width of the train on the top of the cake. Tint the
royal icing yellow and pipe the track with the plain
nozzle. Use the star nozzle to pipe a border around
the base and top of the cake. Pipe the name on the
green circle and attach the train and candles with
royal icing.