Roasted Caramelized Balsamic Onions

Directions

1. 1
   Preheat the oven to 450*F.
2. 2
   Cut the onions into halves at the equators.
3. 3
   Remove the skin and any tough outer layers.
4. 4
   Do not cut off the root and stem ends and be careful not to score the layers you don't remove: uncut, the outer layer will better hold the onion together as it roasts.
5. 5
   Place the onion halves cut side down in a 9-inch square baking pan.
6. 6
   Melt the butter in a saucepan and stir in the vinegar, thyme, salt, and pepper.
7. 7
   Pour over the onions.
8. 8
   Bake for about 20 minutes, and then turn the onions over and baste them with the pan juices.
9. 9
   Bake for another 20 to 25 minutes, until easily pierced with a paring knife and the inner rings have begun to swell and rise up.
10. 10
    Serve immediately or at room temperature.
11. 11
    Enjoy!