Mars Bar Slice is probably not something that you usually see on a high tea menu, but when I recently purchased a new three tiered server I was in an extreme chocolate mood and given had a few Mars Bars on hand, I thought it was a good enough reason to make a childhood favourite.
My dad played golf a lot and when we would head out to the club to pick him up my brother and I would sometime be allowed to have a Mars Bar while we waited. I did get a bit over them for a while but when started making Mars Bar Slice I certainly started to appreciate them again.