Roasted Balsamic Onions Recipe

Elevate your dinner with these irresistible Roasted Balsamic Onions! Sweet, savory, and bursting with flavor, this easy side dish is perfect for any occasion. Tender onions roasted to perfection and glazed with a rich balsamic syrup – it's a taste sensation your guests won't forget.

Prep Time 15 mins
Cook Time 100 mins
Calories 213 kcal
Protein 4g
Rating 5.0 (2 Reviews)
Roasted Balsamic Onions 56

Recipe Actions

Share this recipe:

Recipe Author

Chef Forktionary, author of this recipe

Recipe adapted from Food.com. Standardized by Forktionary.

Ingredients for Roasted Balsamic Onions

Cook Smarter with Sous, Your Kitchen Companion

Missing an ingredient for this Roasted Balsamic Onions? Need a perfect wine pairing or a healthy side dish idea? Don't guess—ask Sous! Your AI-powered sous-chef is ready to help you swap ingredients, adjust serving sizes, and discover flavor tips in seconds.

How to Make Roasted Balsamic Onions

  1. Preheat oven to 350°F (175°C).
  2. Peel onions, removing the outermost layers until you reach a firm, inedible layer.
  3. Place 4 large red onions in a large bowl.
  4. Add 1/4 cup olive oil to the bowl; toss gently to coat the onions completely.
  5. Transfer onions to a large roasting pan, reserving the remaining oil.
  6. Roast for 60-75 minutes, basting occasionally with the reserved oil, until the onions are tender when pierced with a fork.
  7. Remove the onions from the roasting pan and set aside on a plate to cool slightly.
  8. Place the roasting pan over medium heat on the stovetop. Add 1/4 cup balsamic vinegar.
  9. Simmer the vinegar, scraping up any browned bits from the bottom of the pan, until it reduces to a thick, syrupy consistency (about 10-15 minutes).
  10. Pour the balsamic syrup over the cooled onions, ensuring they are well coated.
  11. Season generously with salt and freshly ground black pepper. Sprinkle with 2 tablespoons of chopped fresh parsley.
  12. Serve warm or at room temperature. Enjoy!

Nutrition Information (Approximate per serving)

Sodium

0 g

Sugar

42g

Fat

9g

Carbs

7g