Reading a thread on chocolate yogurt, or rather the lack thereof, in another part of the forum made me think I should put this up. . .

  Put a tub of Total Greek yogurt into a bowl and add several heaped dessert spoons of Nutella. Mix well, unless you'd like a marbled effect, and put in the fridge for a good few hours, or overnight if you can resist that long. Hey presto! The thickest, creamiest, luxurious - est (!) choc yog you could ever imagine!!!