Provençal Prune Tart

One summer, we spent a perfect holiday in a farmhouse set amongst the theatrical-looking rocky Alpilles in Provence. It was my annual break from cooking, so we tried out all the surrounding family restaurants. On our last night, however, we treated ourselves to a less modest establishment and finished the meal with a wonderful Tarte aux Pruneaux which was simply a few prunes scattered between thin, crisp layers of the flakiest pastry. I tried to imitate it when we got home and found