Red Wine Onion Tart Dec 31, 1999 INGREDIENTS:6 Tbsp. olive or cooking oil 9 large yellow onions, halved, thinly sliced 1 ½ 750-ml bottle of dry red wine (Cabernet Sauvignon or Merlot) 3/4 cup sugar 1 ½ cups heavy cream 3 10-inch pastry shells as...