Giant Jaffa Cake

One packet sponge mix (or make a victoria sponge, too much like hard work if you ask me when you can but a packet mix from Tesco for 22p)
One jar shredless orange marmalade
about 200g milk chocolate.  I suppose you should use dark really since that's what's on jaffa cakes but I thought it might be a bit too rich.

Bake the sponge cake in 2 sandwich tins as per instructions on the packet, or the recipe you got somewhere baky.
Melt a couple tablespoons marmalade in a bowl
Put melted marmalade on top of one cake and plonk the other one on top.  Then put marmalade on top of the cake too.
When the cake is cooled, melt the chocolate and smear that all over the top and sides of the cake.

EAT THE CAKE!