By eHow Food & Drink Editor
Cut out two heart-shaped pieces from each sheet, starting from the fold. Make each heart about 2 inches wider than the fish fillets. Set aside.
Place a fillet on one side of each heart, and sprinkle the fish with salt and pepper. Top with the onions and their juices. If the onions don't have any juices left, add a tablespoon or two of white wine or water to each packet.
eHow Food & Drink Editor