Need a quick yet impressive holiday cookie? Roll puff pastry dough in sugar and cinnamon, fold, cut, and voilà! Palmiers (aka elephant ears). I made a batch today from puff pastry dough I rescued from the dark recesses of my freezer. Last winter I mixed a lot of Joanne Chang’s easy Quick Puff Pastry from Flour for whatever might arise. Chang says you can freeze it for up to a month, but c’mon, you can even freeze fish for longer than that. Here it is almost a year later and the silky dough rolled out as smoothly as if it were fresh. Today I lost track of my folds and they came out more…