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Roasted Onions With Thyme

5 Mins read
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You’ve stumbled upon the ultimate guide to making succulent, flavor-packed roasted onions with thyme. You’re about to learn the secrets to perfect roasting, discover handy tips and tricks, and find out why this dish isn’t just tasty, but also packed with health benefits.

Not sure what to pair it with? Don’t worry, we’ve got you covered.

Let’s embark on this culinary journey together!

The Magic of Thyme in Roasting Onions

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You’ll be amazed at how thyme can transform the flavor of your roasted onions. This humble herb has a knack for lifting the caramelized sweetness of the onions, enhancing their natural flavor, and adding a hint of earthiness. It’s a simple addition, but it makes a world of difference.

You might think you’re just roasting onions, but with a sprinkle of thyme, you’re creating a culinary experience. The aroma will fill your kitchen, creating an inviting and cozy atmosphere. And when you take that first bite, you’ll understand the magic of thyme. Its subtle, minty taste will dance on your tongue, making every bite a delight.

Thyme isn’t just an herb, it’s a secret weapon in the kitchen. So go on, give it a try. You won’t regret it.

Step-By-Step Guide to Preparing Roasted Onions With Thyme

Next, we’ll go through each step needed to make this flavorful dish, making sure you don’t miss a beat.

Start by preheating your oven to 400 degrees.

While it’s warming up, peel and quarter your onions. Once they’re ready, toss them in olive oil, ensuring they’re thoroughly coated.

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Now, sprinkle them with salt, pepper, and freshly picked thyme. Don’t be shy with the seasoning, it’s what brings out the robust flavors.

Then, lay them on a baking sheet, making sure they’re not overcrowded.

Pop them in the oven and roast for about 40 minutes. During this time, you’ll notice the aroma of thyme and onions filling your kitchen.

Once they’re golden brown and caramelized, they’ll be ready to serve.

Enjoy this simple yet delectable dish.

Tips and Tricks for Perfectly Roasted Onions

In order to achieve that perfect caramelization and flavor, it’s essential to pay close attention to the temperature and time in the oven. You’ll want to roast your onions at a moderate heat – around 400 degrees Fahrenheit is ideal.

Timing, too, is crucial. You’re aiming for a slow, gradual roast that’ll coax out the natural sugars in the onions. A good rule of thumb is around 45 minutes to an hour. Remember, it’s not a race.

And don’t forget to toss them occasionally to ensure even roasting.

A final tip: mix in some thyme during the last ten minutes of roasting. It’ll add an earthy, aromatic note that’ll complement the sweetness of the onions beautifully.

Enjoy your perfectly roasted onions with thyme!

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Pairing Suggestions for Roasted Onions With Thyme

Pairing your caramelized veggies with a juicy steak or a savory chicken dish truly enhances the overall dining experience.

Imagine those sweet roasted onions with thyme, their flavors amplified by a perfectly seared sirloin or a succulent roasted chicken. It’s like a symphony in your mouth, where every note is perfectly played. You’re not just eating food, you’re experiencing it.

Don’t forget about fish either. The subtle sweetness of the onions can balance out the strong flavors of a grilled salmon or a pan-fried cod.

Health Benefits of Roasted Onions With Thyme

You’ll also be pleased to know that this tasty dish packs a nutritional punch, offering an array of health benefits. Onions are chock-full of antioxidants that help combat harmful free radicals in your body. They’re also a rich source of Vitamin C, which boosts your immune system, and chromium, which aids in regulating blood sugar.

Thyme, on the other hand, isn’t just a flavor enhancer. It’s a powerhouse of vitamins A and C, and it’s packed with fiber, iron, and manganese. Furthermore, thyme has antibacterial properties and is known to help with respiratory issues.

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You've stumbled upon the ultimate guide to making succulent, flavor-packed roasted onions with thyme. You're about to learn the secrets to perfect roasting, discover handy tips and tricks, and find out why this dish isn't just tasty, but also packed with health benefits.
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Course Side Dish
Cuisine Mediterranean
Servings 4


  • 2 brown/yellow onions See Note 1
  • 2 red onions
  • 3 tablespoon extra virgin olive oil See Note 2
  • 8 stalks fresh thyme
  • sea salt and black pepper – to taste

To serve (optional)

  • balsamic glaze See Note 3
  • rocket/arugula leaves


  • Preheat oven to 200 Degrees C (390 F).
  • Cut the onions in half, remove the stem and peel. Leave the root intact to hold the onion half in place.
  • In a small cast iron skillet or baking dish, place the onions cut side up, and drizzle with the olive oil.
  • Distribute the thyme over and around the onions and sprinkle with salt and pepper.
  • Roast for 35 minutes, turning over halfway through to ensure even cooking.
  • Remove from oven when they are tender and cooked through – check with the point of a sharp knife.
  • The exact roasting time will vary depending on the size of your onions.
  • Serve as is, or with a drizzle of balsamic glaze.


  1. Onions: I have used a combination of brown/yellow and red onions. Cipollini onions also work well and can be roasted whole.
  2. Tablespoon: we use a standard Australian tablespoon which is 20 ml (4 teaspoons).
  3. Balsamic glaze: use store-bought or make your own.


Can I Use Other Herbs Besides Thyme for Roasting Onions?

Absolutely, you can use other herbs besides thyme for roasting onions. Rosemary, sage, and oregano work well too. It’s all about your personal taste. Experiment with different herbs to find your favorite combination.

How Long Can I Store the Roasted Onions With Thyme?

Sure, you can store your roasted veggies for about a week. Just make sure they’re in a sealed container in the fridge. They’ll lose some texture over time, but they’ll still taste great reheated.

Can I Use This Recipe With Other Types of Onions?

Absolutely, you can use different types of onions for this recipe. Red, white, or yellow onions, all work well. Each type lends its unique flavor, so don’t hesitate to experiment and find your favorite.

What Are Some Common Mistakes to Avoid When Roasting Onions With Thyme?

Avoid overcrowding the pan, it prevents even cooking. Don’t forget to stir occasionally, ensuring they don’t burn. Also, be sure not to skimp on the thyme, it’s crucial for the overall flavor.

Can I Make This Dish in Advance and Reheat It Later?

Absolutely, you can prepare this dish in advance. Just ensure it’s cooled before refrigerating. When you’re ready, reheat it slowly and thoroughly. It’s a fantastic way to save time and still enjoy a delicious meal.


So, you’ve conquered the art of roasting onions with thyme. It’s a simple, yet flavor-packed side that’s sure to impress at any meal. Remember, it’s all about slow roasting for that sweet, caramelized goodness, and don’t hold back on the thyme.

Pair it with your favorite protein or enjoy it solo. Your taste buds, and your health, will thank you.

Now, get out there and keep creating culinary magic with this delicious and healthy roasted onions with thyme recipe.

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About author
Meet Sue Perera, the culinary aficionado behind our captivating recipe hub. An imaginative and talented young woman, Sue has an unwavering passion for all things food – especially those aromatic wonders, cinnamon and thyme. Her deep-seated love for these two unique spices inspired the birth of this website, but don't be fooled – her culinary repertoire extends far beyond these two ingredients.
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