When we were little, my mother used to make us train cakes for our birthdays. When one of my friends decided to celebrate her birthday recently, I decided to make her a train cake.
I made two cakes in 1lb loaf tins using the following recipe:
25g cocoa powder
Cream the butter and sugar together until soft; add the eggs and gently fold in the sieved flour and cocoa. Bake at 180C for about 30-40mins until a knife inserted into the cake comes out clean.
Once the cakes have cooled, place them on a long chopping board. Cut one of them 1/3rd of the way along to get two pieces. The small bit goes on top of the uncut cake as the cab of the engine and then the remaining 2/3rds becomes the tender.
Cover the whole thing in butter cream icing (I used 125g butter, 100g melted chocolate and enough icing sugar to make it sufficiently stiff to not drip off but soft enough to spread easily), and decorate with smarties for coals and windows, sliced-up mini-rolls for wheels and the engine chimney and lots of candles.