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Balsamic Thyme Whole Roasted Onions

These whole roasted onions are seasoned with sweet balsamic vinegar and fresh thyme. The long roast time leaves them soft and buttery, almost melting in your mouth with each bite.

I’m basically bi-polar when it comes to onions.

There aren’t many other foods I find more disgusting than raw onions. Ugh, gag, gross. That raw onion taste just lingers for daysssss.

That said, there aren’t many other foods I love more than sweet caramelized or roasted onions. Or, grilled onions in the summer for that matter. As long as they’re cooked, I’m in.

I actually had to make an onion jam for a freelance project recently and have been putting it on all.the.things. ever since.

These whole roasted onions are seasoned with sweet balsamic vinegar and fresh thyme. The long roast time leaves them soft and buttery, almost melting in your mouth with each bite.

A few weeks ago, I got the opportunity to visit Minkus Farms, a local onion farm as part of the New York State Grown & Certified Program.

Minkus Farms is one of the many New York produce farms joining in on this new program that will be launching in the spring of 2017.

As someone hugely into buying local, in fact, I’d rather buy local than organic any day, I’m really excited about this new program.

With a goal of educating people on the importance of buying local and strengthening confidence in products grown by New York state farmers, it’s something I’m excited to support 100%.

Whole roasted onions are seasoned with fresh thyme, salt, pepper, butter and sweet balsamic vinegar for delicious side dish.
Yellow onions at Minkus Farm
Whole roasted onions make a great side dish, especially perfect for a nice steak dinner!

To receive the certification, farms must be inspected for safe food handling and environmental stewardship, and their products must meet the highest quality standards.

In addition, farms and farmers must currently be certified for Good Agricultural Practices (GAP) and participate in Agriculture Environmental Management.

It’s a combination of modern food safety standards and environmental stewardship.

The state is both helping consumers by giving an assurance of quality in how and where the food is grown and produced, while also promoting local producers who are meeting these safety and environmental guidelines.

Win, win.

So now when you’re in the store you won’t have to wonder if the produce before you was flown in from 3,000 miles away or not AND you get a guarantee of quality practices both from a safety and environmental standpoint.

Rick Minkus from Minkus Family Farm in New Hampton, NY

Besides learning all there is to know about onions (best tip of the day: mushy, soft “tops” means the onion is likely rotten in the center, pick the dried out ones instead!) and standing in an onion warehouse that resembled the ball pit at gymnastics (or McDonalds play place) just on a 1000x larger scale, we were all sent home with a 10 pound bag of onions to play with.

It was actually hard for me to come up with an idea of what to make with onions that really showcased the onion!

So often, they’re just one of the building blocks of a recipe, not the starring role.

Unless we’re talking about these Mexican stuffed onions – those are a dinner favorite!

Well, these whole roasted onions change that.

Roasting whole onions with thyme, balsamic and butter leaves them buttery, soft and almost melting in your mouth. A great winter side dish!

How To Make Roasted Onions

While I kept the onions whole and roasted them with the skin on, you can definitely roast onions without the skin and cut them in half or quarters too.

If you make the roasted onions that way you can still use the same seasoning blend this recipe calls for.

Roasting the onions at 400°F (although I’ve gone up to 425°F before too with success) for about an hour in the oven if they’re whole (a little less if you cut them in half and even less if quartering them) will give you a perfectly roasted onion.

Balsamic and thyme gives these whole roasted onions a delicious deep flavor profile making them a great dinner side dish.

Seasoned with just a bit of fresh thyme and balsamic vinegar, the result is a buttery, caramelized, slightly sweet side dish that’s just begging to be served with a nice hunk of meat like this rosemary garlic flank steak or these sticky honey soy pork chops.

The onions practically melt in your mouth with each bite and it’s almost crazy to me that these whole roasted onions are the same vegetable as those disgusting raw translucent slices so many of you put on your sandwiches!

Seems sort of odd to just plop an entire onion on your plate as a side dish but that’s exactly how I’ll be enjoying most of my 10 pound bag now that I have this whole roasted onion recipe!

Probably alongside a simple air fryer Cornish hen for a good Sunday dinner.

I highly suggest you give it a shot too if you find yourself in an onion surplus.

Or, you can always learn how to make caramelized onions and then put them on pretty much any and everything!

Love these roasted onions?

Try this Caramelized Peach and Onion Salsa or these Skillet Lamb Chops and Cipollini Onions – both featuring deliciously roasted onions as the star ingredient!

Balsamic Thyme Whole Roasted Onions

Balsamic Thyme Whole Roasted Onions

Yield: 4 servings
Prep Time: 10 minutes
Cook Time: 45 minutes
Total Time: 55 minutes

These whole roasted onions are seasoned with sweet balsamic vinegar and fresh thyme. The long roast time leaves them soft and buttery, almost melting in your mouth with each bite.


  • 7-8 small-medium yellow onions
  • 2 tablespoons extra virgin olive oil
  • 2 tablespoons balsamic vinegar
  • 1 tablespoon butter
  • 5 sprigs thyme
  • salt and pepper, to taste


  1. Preheat oven to 400 degrees.
  2. Slice off the tops of the onions and a small sliver on the bottom so that they sit flat. Leave the skin on around the outside and place in a small 8 inch cast iron skillet.
  3. Drizzle the onions with the olive oil then season with the salt, pepper, balsamic vinegar and thyme. Break the butter up into small pats and place on top of each onion.
  4. Roast for 45 minutes to 1 hour until golden brown and soft.
Nutrition Information:
Yield: 4 Serving Size: 1
Amount Per Serving: Calories: 146Total Fat: 10gSaturated Fat: 3gTrans Fat: 0gUnsaturated Fat: 7gCholesterol: 8mgSodium: 102mgCarbohydrates: 14gFiber: 2gSugar: 7gProtein: 2g

This website provides approximate nutrition information for convenience and as a courtesy only. Nutrition information can vary for a variety of reasons. For the most precise nutritional data use your preferred nutrition calculator based on the actual ingredients you used in the recipe.


Please leave a comment below or pin it to your Pinterest account!

This is a sponsored conversation written by me on behalf of Empire State Development . The opinions and text are all mine.

Shawn Matthews

Sunday 7th of April 2019

I'm an onion lover so I don't need an excuse for any onion recipe but I did this and they are amazing absolutely amazing..


Saturday 2nd of February 2019

Hi there! Just wondering how long these bad boys will last refrigerated once cooked? Thinking of meal prepping with them for a few dinners in the upcoming days.

Thank you!

Running to the Kitchen

Saturday 2nd of February 2019

They'd probably be good for about a week in the fridge.


Thursday 22nd of November 2018

The recipe lists 2 tablespoons of extra virgin olive oil as an ingredient, but the directions don't mention the oil at all or say what to do with it! ???

Running to the Kitchen

Friday 23rd of November 2018

Sorry about that, looks like I accidentally left that out! The recipe has been edited to include when/how to use the olive oil.

Nicole @ Young, Broke and Hungry

Saturday 3rd of December 2016

These roasted onions are such an awesome tasty side!


Saturday 3rd of December 2016

Absolutely LOVE this post. One because onions rock. Two, because this recipe, yo. Three, love the images from the farm.

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