Balsamic Glazed Onions

Directions

1. 1
   Preheat the oven to 425 degrees.
2. 2
   Cut the onions in half lengthwise, leaving the skins on.
3. 3
   In a 12 inch oven proof skillet, heat the oil until smoking.
4. 4
   Place 4 onion halves cut side down in the skillet.
5. 5
   Cook without moving them, over medium heat, until dark golden brown, 7 to 8 minutes.
6. 6
   Add the vinegar and place the skillet in the oven.
7. 7
   Bake until the onions are soft, 15 to 20 minutes.
8. 8
   Remove the onions from the pan immediately.
9. 9
   Place cut side up on a cool plate.
10. 10
    Pour the syrup that has formed in the pan over the onions and cool to room temperature.