Caramelized Onion Steak Sandwich Dec 31, 1999 INGREDIENTS:4 ½ pounds beef tenderloin 4 jumbo Idaho-E.Oregon yellow onions, 1/8-inch slices 12 slices medium cheddar cheese 12 large slices bread 3/4 cup ale mustard 24 lettuce leaves 24 slices tomato 12 oz. unsalted...