When September rolls around in New England home cooks can look a little grim at the prospect of dealing with too much.  Too much zucchini, too many tomatoes, too much corn.  Your CSA, your friends, or your own garden runs amok, filling your fridge and kitchen counter with ever more too much of a good thing.  This year a new offender for us, prune plums.  And a time crunch.  Too little time + too much fruit = Plum Cookies.  In more relaxed times we’ve made jam, or a plum cake.  We might finally get to Sophie James’s Sautéed Plums with Dark Chocolate Pudding and Crushed Amaretti Cookies, but not today.  Nope.  Just these buttery little flying saucers hoving into view with sugary purple pilots.