Years ago I saw a picture of this cake in a magazine....and as usual it has taken me this long to get around to making it.
It's a little time consuming as you have to cook 5 cakes, I suppose it would be heaps quicker if you
A. Had a really big oven - I don't
B. You had 5 cake tins all the same size - I don't
However I did have a lot of fun making it & of course my family got a big surprise as uncut it just looks like any iced cake, once cut it surprised everyone with a little bit of Rainbow Cake cheer!
Try it sometime it's well worth the time & effort. I just used a simple Butter cake recipe (doubled) & then split into 5 bowls.