Balsamic Glazed Onions

A very simple recipe from Mario Batali in _Simple Italian Food_.

• Ready In: 35 mins
• Serves: 4

Ingredients

• 2  large red onions
• 3  tablespoons extra virgin olive oil
• 3⁄4 cup  balsamic vinegar

Directions

1. Preheat oven to 425°F Cut onions in half through the root, leaving skins on.
2. In an oven-safe 12" skillet, heat olive oil until smoking. Add onions, cut side down. Cook over medium heat without moving them for 7-8 minutes, until dark golden brown.
3. Add the balsamic vinegar and transfer pan to preheated oven until onions are tender, 15-20 minutes.
4. Remove onions to a cool plate, cut side up. Pour any syrup in the pan over the onions. Let cool to room temperature before serving.