Mars Bars... with peanut butter?! o.O Right, that does it, I'm looking these things up. The ones I know have chocolate moussey nougat whip stuff with caramel on top covered in chocolate.
Ah, US Milky Way is like our Mars Bar, and their 3 Muskateers is like our Milky Way.
edit: Huh. Looks like deep fried Mars Bars are actually a distinctly not American thing... I'm sure I've heard of something similar, though.