Total Time
Prep 5 mins
Cook 30 mins

A Mario Batali recipe.


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

If you love balsamic vinegar, this is a must try! Its also quick & easy. Thanx mermaidmagic!

CountryLady March 05, 2005

I halved the recipe because it was just for me, but I wish I had made the full recipe, this was so good! I loved the intense taste of the reduced balsamic vienegar! Thanks mermaid! :)

Sharon123 February 18, 2005

Very good,I made 2 large onions made them just like the recipe stated. We really enjoyed them with Swordfish and a big salad. We love the syrupie balsamic sauce over the onion. Thank you Mermaidmagic, for the recipe.

Barb Gertz January 17, 2005