This rustic Alsatian Onion Cake, or Zwiebelkuchen, comes from the French-German border region of Alsace — a place celebrated for its vineyards, hearty country fare, and old-world hospitality. Traditionally served during the fall grape harvest, this savory tart features a buttery crust filled with sweet, slow-cooked onions, rich sour cream, and eggs, baked until golden...Read More