One of the "technical" bakes was Kouign amann. None of the bakers knew or even heard of the Breton bread, much less how to pronounce it. I was surprised because I baked this delicious crunchy with caramelized sugar bread almost 8 years ago when I read about it on David Lebovitz's blog. I've never baked it into small muffin size though and don't remember it being flaky or with visible layers like croissants.
The recipe is Paul Hollywood's, one of the two judges on the show. BTW, most of the recipes are posted on PBS website. I like these too but I remember the Kouign amann made with David's recipe tasted better probably because it has more sugar than Paul's.