The Far Breton is a traditional prune cake from the Brittany region (North-West of France). It is similar to a clafoutis, but with more of a flan-like texture. It is delicious, and very easy to make. As an added bonus, it will get you to eat prunes, which have many health benefits. Win, win!
The recipe I am using is from Chef Yves Pérou. You can find it in French here.