Whole Roasted Onions Recipe

Jump to Recipe

This post may contain affiliate links. Please read our disclosure policy.

Whole Roasted Onions Recipe – delicious buttery whole roasted onions baked to perfection – perfect as a side dish!

picture of whole roasted onions in a tray with pepper and rosemary
Want to save this recipe?
Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week – and be sure to tag @sweetcsdesigns on social media – I love to see your creations!
Please enable JavaScript in your browser to complete this form.
Name

Don’t want all the extras in a recipe post? We provide a skip to recipe button in the top left corner, as well as a clickable table of contents, just below, to help make this page easier to navigate.

picture of whole roasted onions in a tray with pepper and rosemary

Buttery Whole Onions

This is the perfect gorgeous – but crazy easy – side dish for a holiday dinner or even Sunday supper – and it makes the whole house smell amazing.

These onions roast to soft, buttery perfection with just a couple herbs and spices – and are fabulous paired with pork tenderloin, steaks, turkey, chicken thighs, or any hearty main dish you love!

We hope you love this recipe as much as we do!

How To Roast Whole Onions

Roasting onions is so easy, you’re going to want to make these decadent, buttery onions for every meal!

If you can use a knife and sprinkle some herbs, you can make this side dish!

The process is relatively straightforward, following these steps:

  • Cut off the top and bottoms to onions
  • Season generously with salt and pepper
  • Top with butter and herbs
  • Bake

Tips and Tricks to Perfect Whole Roasted Onions

Baked onions are done when they are browned and very soft, which can take anywhere from 60-100 minutes.

Don’t rush your onions – make them ahead of time and reheat if you’re worried about timing for an event, as the flavor really can’t be rushed for this recipe.

Recipe FAQs

When are whole roasted onions done?

Baked onions are done when they are browned and very soft, which can take anywhere from 60-100 minutes.
Don’t rush your onions – make them ahead of time and reheat if you’re worried about timing for an event, as the flavor really can’t be rushed for this recipe.

Do you roast onion in the skin?

We roast onion in the skin for the best flavor – simply discard when serving.

Are whole roasted onions vegan?

This recipe isn’t expressly vegan, as we’re using butter.
Swap the butter for equal amounts of olive oil drizzled over the onions to make it vegan!

How long can whole roasted onions be kept?

This recipe can be stored in the refrigerator in an airtight container for up to five days.

picture of whole roasted onions in a tray with pepper and rosemary

Other Easy Side Dishes You’ll Love

If you’re looking for other dishes to pair alongside a pork tenderloin, London broil, turkey breast, lobster tails, or even cauliflower steaks – please check out some of our favorite side dishes below:

You can find our entire side dish recipe index here.

picture of whole roasted onions in a tray with pepper and rosemary

Whole Roasted Onions Recipe

If you love this easy recipe please click the stars below to give it a five star rating and leave a comment! Pease also help me share on facebook and pinterest!

Follow on Instagram

Follow
picture of whole roasted onions in a tray with pepper and rosemary

CONNECT WITH SWEET C’S!
Be sure to follow me on social media and get in on all the fun!

Only have 30 minutes to get dinner on the table? Sign up for my 30 minute dinner plans direct to your inbox!
Find and shop my favorite products in my Amazon storefront here!

Want to save this recipe?
Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week – and be sure to tag @sweetcsdesigns on social media – I love to see your creations!
Please enable JavaScript in your browser to complete this form.
Name
picture of whole roasted onions in a tray with pepper and rosemary

Whole Roasted Onions Recipe

Yield: 6
Prep Time: 5 minutes
Cook Time: 1 hour 10 minutes
Total Time: 1 hour 15 minutes

Whole Roasted Onions Recipe - delicious buttery whole roasted onions baked to perfection - perfect as a side dish for pork, chicken, & steak!

Ingredients

  • 6 yellow onions
  • 6 tablespoons butter, cut into 6 pats for each onion (use olive oil for vegan)
  • 1 tsp italian herb seasonings
  • 2-3 sprigs fresh rosemary or thyme
  • salt and pepper, to taste

Instructions

  1. Preheat oven to 350 degrees.
  2. Cut the top and bottom off onion to make a flat surface, leaving peel on.
  3. Place into baking dish, either lined with foil or prepped with nonstick cooking spray.
  4. Sprinkle with salt, pepper, and herbs.
  5. Top with a pat of butter.
  6. Bake 60-90 minutes at 350 degrees, until onions are browned, very soft, and fragrant.
  7. When serving, remove peel.
Nutrition Information
Yield 6 Serving Size 1
Amount Per Serving Calories 151Total Fat 12gSaturated Fat 7gTrans Fat 0gUnsaturated Fat 4gCholesterol 31mgSodium 144mgCarbohydrates 11gFiber 2gSugar 5gProtein 2g

Nutrition is automatically calculated by Nutritionix - please verify all nutrition information independently and consult with a doctor or nutritionist for any and all medical and diet advice.

Did you make this recipe?

Please leave a comment on the blog or share a photo on Pinterest

About Courtney

Courtney loves to share great wine, good food, and loves to explore far flung places- all while masting an everyday elegant and easy style at lifestyle blog Sweet C’s Designs. Sweet C's devoted to finding the best food and drinks you'll want to make or find, around the world!

You May Also Like

Leave a comment

Your email address will not be published. Required fields are marked *