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Balsamic Roasted Onions Recipe

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4.1 from 1 review

Balsamic Roasted Onions are a deliciously sweet and savory side dish featuring caramelized yellow onions roasted to tender perfection with a rich balsamic vinegar glaze, brown sugar, honey, and a hint of fresh thyme. Perfect to complement any meal, these golden roasted onions bring a burst of flavor and elegance to your plate.

Ingredients

Onions

  • 8 Small Yellow Onions, peeled and sliced in half

Glaze & Seasoning

  • 3 tbsp. Olive Oil
  • 1 ½ tsp. Fine Sea Salt
  • ½ cup Traditional Balsamic Vinegar
  • ¼ cup Brown Sugar
  • 2 tbsp. Honey
  • Fresh Thyme for garnish

Instructions

  1. Preheat Oven: Preheat your oven to 400°F (200°C) to prepare for roasting the onions evenly and achieving caramelization.
  2. Prepare Onions: Place the peeled and sliced half onions in a large, oven-safe casserole dish, ensuring they are spread out evenly for uniform roasting.
  3. Season and Initial Roast: Drizzle the onions with olive oil and sprinkle them with fine sea salt. Roast in the oven for 15 minutes to start softening and browning.
  4. Add Sweeteners and Vinegar: Remove the dish and sprinkle brown sugar over the onions, then drizzle with honey and traditional balsamic vinegar for a rich and tangy glaze.
  5. Baste and Continue Roasting: Return the dish to the oven and roast for 10 minutes. Then baste the onions with the balsamic mixture in the dish to coat them well.
  6. Repeat Basting: Roast the onions 1 to 2 more times, each time basting after 10 minutes, until the onions are tender and caramelized to a golden brown color.
  7. Garnish and Serve: Once fully roasted, garnish the onions with fresh thyme leaves and serve warm to enjoy the full depth of flavor.

Notes

  • Use small yellow onions for the best sweetness and caramelization results.
  • If you prefer a less sweet glaze, reduce the amount of brown sugar or honey slightly.
  • Ensure even slicing so onions cook uniformly.
  • Fresh thyme enhances flavor but can be omitted or substituted with rosemary if desired.
  • Use a large enough casserole dish to avoid overcrowding, allowing onions to roast evenly.