[Hosts' note: this topic is part of an extended conversation that grew too big for our servers to handle efficiently.  The discussion continues from here.]   I've been searching for the post @Anna N made awhile back about the CSO tomato tart with the insufficiently caramelized onions.  I think it was in this thread but I sure can't find it.   I had half a thought to try the tart for dinner but I've never used frozen puff pastry dough sheets before.   Maybe it's buri