Balsamic Roasted Onions from WeeliciousPin

This may seem like the most un-kid-friendy recipe known to man, but that’s why I challenge you to make it. Because if you think this dish won’t go over well with your family, you’re in for a big surprise. Without fail, every time I make these Balsamic Roasted Onions they’re the first thing to disappear off my family’s plates.

Balsamic Roasted Onions from WeeliciousPin

The genesis for this recipe was years ago, when I witnessed Kenya voraciously eating raw onions off a smoked salmon platter at a birthday party when he was just a wee one. Being that he was essentially still a baby I was totally shocked, but also elated as I myself am an onion lover. I was motivated by this occurrence, and started making him cooked onion recipes like healthy baked Crispy Onion Rings and later graduated to big bowls of Ooey Gooey French Onion Soup (one of my own beloved childhood dishes).

Balsamic Roasted Onions from WeeliciousPin

You can use any type of onions you have on hand for these Balsamic Roasted Onions, including yellow onions, but red and Maui onions are my favorites. Tossed with fresh rosemary and thyme and then splashed with a big hit of balsamic vinegar, they roast up and caramelize, becoming sweet and as soft as butter.

Balsamic Roasted Onions from WeeliciousPin

If you have a big bag of onions on hand and don’t know what to do with them, make these Balsamic Roasted Onions. If you don’t have any onions in your kitchen, go get some!

And be sure to save any leftovers (if you have any) to put in a good ol’ sandwich like this one (link to Grilled Veggie Wraps).


Balsamic Roasted Onions

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Servings: 4
Prep Time 5 minutes
Cook Time 50 minutes
Total Time 55 minutes


  • 3 onions, any color, peeled and quartered
  • 3 tablespoons olive oil
  • 3 tablespoons balsamic vinegar
  • 1 tablespoon minced fresh thyme (or 1 teaspoon dried)
  • 1 teaspoon minced fresh rosemary (or 1/2 teaspoon dried)
  • 1/2 teaspoon kosher salt


  • Preheat oven to 400F.
  • In large 7 x 11 inch baking dish, combine the balsamic vinegar, oil, thyme, rosemary, salt and onion wedges and toss to coat.
  • Bake for 50-60 minutes, until the onions are caramelized and fork tender, stirring once halfway through.
  • Remove from the oven and drizzle with the remaining dressing.


Calories: 130kcal | Carbohydrates: 10g | Protein: 1g | Fat: 10g | Sodium: 300mg | Fiber: 2g | Sugar: 5g
Did you make this recipe?Mention @Weelicious or tag #weelicious!

About the Author

Catherine is a mama of three. A Kentucky girl living in California. Here’s what I know: all kids can be great eaters and mealtime must be easy. I create simple, healthy recipes the whole family will love.


  1. “drizzle with the remaining dressing”? What remaining dressing? Doesn’t it say to dress in the roasting pan…?

  2. What a great way to encourage children to eat new foods, especially items like onions that many adults won’t try. Plus these look so easy to make!

  3. Delicious! I could eat an entire bowl of balsamic roasted onions. They make the most lovely addition to any sandwich, wrap or stuffed pita! And onions I have . . . so thank you for the inspiration!

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