- Cut unpeeled onions lengthwise into quarters.
- Combine soy sauce, vinegar, sugar, basil, tarragon, oregano, pepper and 1/3 cup water; pour into 8-inch square baking pan. Place onion quarters in pan, turning over to coat cut sides with sauce mixture.
- Bake in lower third of 400ºF. oven 40 to 45 minutes, or until onions are tender and most of liquid has evaporated, carefully turning onions over every 10 minutes.