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Whole Roasted Onions

January 10, 2015 by Joy the Baker 94 Comments

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whole roasted onions

Here’s how this is going to go down, my friends:  whole roasted onions, roasted with olive oil and butter, roasted with rosemary, roasted whole, roasted to sweet submission.

It’s cold.  I mean… really cold.  Here’s our chance to crank up the oven, throw these onions inside and lean against the oven door as they transform from sharp and bite-y to soft and sweet.  And while we’re at it, here’s how to roast any vegetable.

Oh wait… you might be one of those people who think they don’t like onions.   I’m here to tell you that you’re wrong.  You exclusively like whole roasted onions.

If you’re feeling fancy you might want to try this recipe for Ottolenghi’s Miso Butter Roasted Onions and Garlic! It’s like a  savory onion candy. 10/10 recommend.

whole roasted onions

Roasting is magic.  It’s as simple as that.

These roasted onions, tops removed and toasted in their jackets, become soft, smooth, sweet, and almost spreadable.  I served mine along side thin cut pork chops and salad because I’m really good at living.

Happy Winter and happy roasting!

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Whole Roasted Onions

★★★★★ 5 from 8 reviews
  • Author: Joy the Baker
  • Prep Time: 10
  • Cook Time: 45
  • Total Time: 55 minutes
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Ingredients

Scale
  • 9 small and medium yellow onions
  • 1/4 cup olive oil
  • 2 tablespoons unsalted butter, thinly sliced
  • coarse sea salt
  • fresh cracked black pepper
  • fresh rosemary sprigs

Instructions

  1. Place a rack in the upper third of the oven and preheat oven to 375 degrees F.
  2. Cut the tops off of each onion, but leave most of the skins on the onion.
  3. Arrange the onions in a square baking dish or a rimmed sheet pan.
  4. Drizzle the olive oil over the onions. Place a thin pat of butter on each onion.
  5. Sprinkle generously with salt and pepper and top with a rosemary sprig.
  6. Bake for 25 minutes until bubbling and tender.
  7. Increase the oven temperature to 400 degrees F and cook for another 15 to 20 minutes until the onions are completely tender and the tops are browned.
  8. Remove from the oven and allow to cool slightly.
  9. Remove the skins, slice and enjoy warm.

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Filed Under: Dinner, Healthy, Recipes, Savory

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Reader Interactions

Comments

  1. chilebeanz

    January 10, 2015 at 10:45 am

    I cook at least one onion per day for the two of us, and now I will have another way to feature them! I will toss in some carrots and potatoes alongside, and that will be the highlight of tonight’s dinner! Healthy and so delish!

    Reply
  2. Kathryn

    January 10, 2015 at 10:30 am

    Given how much I love onions, how have I never thought of this before?? Guess what I’m making this weekend!

    xx Kathryn
    https://www.throughthethicket.ca

    Reply
  3. Bryony Owen

    January 10, 2015 at 10:02 am

    Yes! Roasting vegetables is one of my favourite things to do. Definitely trying these soon!

    Reply
  4. Sam @ PancakeWarriors

    January 10, 2015 at 9:29 am

    Yum this entire post just made me drool, and it’s not even noon yet! I love roasted onions, they are so yummy. Thanks for the easy to follow recipe!

    Reply
  5. Greg

    January 10, 2015 at 9:16 am

    Looks like your onions fit well in the pan. If they do not, would you recommend using a little aluminum foil as spacers to get them all to stand up? Also, my wife likes sweet onions. Any modification needed if I use sweet onions other then probably fewer fit into the pan?
    Looking forward to trying this one.

    Reply
  6. Sammi @Sunshine Recipes

    January 10, 2015 at 8:45 am

    I’ve never given much thought to roasting whole onions! Adding rosemary and butter sound like just the trick.

    Reply
  7. Vicki B

    January 10, 2015 at 8:12 am

    Brilliant! Brilliant! Brilliant! These would go with so many things.

    Reply
  8. Christina @ The Beautiful Balance

    January 10, 2015 at 8:01 am

    I absolutely love roasted and caramelized onions. It is when they’re in their most perfect state!

    Reply
  9. Gina @ Vintage Junk in My Trunk

    January 10, 2015 at 8:00 am

    You’re right — roasting IS magic! Brussel sprouts! Cauliflower! And now onions. Can’t wait to try.

    Reply
  10. Mallory @forkvsspoon

    January 10, 2015 at 7:48 am

    Roasted onions are a favorite in my house.

    Reply
  11. Kristin

    January 10, 2015 at 7:22 am

    my father used to drop whole onions in my great grandmother’s simmering marinara sauce pot because he loves them so much. this would blow his mind.

    Reply
  12. Melissa

    January 10, 2015 at 7:21 am

    i LOVE onions and these babies look amazing. i can’t wait to try this recipe out! *swoon*

    Reply
  13. ksenchan

    January 10, 2015 at 7:19 am

    I am a big fan of onions, and I love how simple it is. Though I imagine it might be difficult to pair with anything other than meat?

    Reply
    • MaggieD

      January 10, 2015 at 10:21 am

      They would go with lots of veggie things: nut loaf, fritatta, with a big lump of cheddar and some crusty bread, or sliced onto a pizza base would be good too, with tomatoes, mozzarella and basil. Yum!

      Reply
  14. Rena

    January 10, 2015 at 6:53 am

    Thank you so much! This recipe sounds delicious and I will immediately prepare them this evening to the baked potatoes and the Bavarian meat loaf I planned already to cook :)
    xx from Bavaria/Germany, Rena http://www.dressedwithsoul.com

    Reply
  15. Natalie @ The Ravenous Mommy

    January 10, 2015 at 6:52 am

    Saving this! We are an onion loving family and this looks perfect :)

    Reply
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