Ingredients

• 4 medium unpeeled yellow onions
• 2 tablespoons olive oil
• Salt and fresh ground pepper
• Balsamic vinegar (optional)

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Instructions

1. Adjust oven rack to lowest position; heat to 425 degrees.
2. Cut onions in half; toss with oil and a generous sprinkle of salt and pepper. Place, cut-side down, on a lipped cookie sheet.
3. Roast until tender and cut surfaces are golden brown, 25 to 30 minutes. Adjust seasonings; drizzle with balsamic vinegar.