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I love red onions and enjoy experimenting with different ways to enjoy them. Baking them with balsamic vinegar, the king of vinegars, may just be my favorite way with red onions. I'll wager a bet that you will love this way of cooking them as well!
Why You Will Love This Easy Recipe!
You will love this dish because:
- Turning raw red onions into tender, tangy and sweet onions is easy and purely deliciously delightful!
- This recipe uses simple ingredients easily found at your local grocery store.
- Baked red onions with balsamic vinegar makes for an easy side dish, antipasto, or a great addition to pasta or even burgers.
So now let me show you what ingredients you'll need for this red onion recipe!
🥘 Ingredients
You'll need the following ingredients for this easy recipe:
- Large red onion (sliced into 8 wedges)
- Olive oil
- Balsamic vinegar - I've used regular store bought balsamic vinegar in this recipe; please see notes below about authentic and genuine Balsamic Vinegar
- Salt
- Black pepper
- Sugar (can use white sugar or brown sugar) - we'll just add a little sugar to enhance the natural sugars in the red onion
Six basic ingredients to sweet and tangy onion heaven!
Balsamic Vinegar and D.O.P.
Balsamic vinegars vary in quality and quality makes a huge difference when using balsamic. Therefore, try to use the best quality balsamic that you can.
Having said that, super high end true balsamic vinegars, such as a 25 Year Balsamic Vinegar of Modena by Alma Gourmet, with the D.O.P. designation, are very thick and are best used sparingly. If you are fortunate to have a quality balsamic such as this one, you won't need as much as ¼ cup of vinegar called for in this recipe. 😄
The D.O.P. stands for "Denominazione d' Origine Protetta" or "Protected Designation of Origin" in English. It is like a certificate of authenticity so that when you see this label you know you are buying a product that meets certain strict criteria as set forth by governmental organizations. An article by TheChefAndTheDish.com called "What is DOP? Understanding Italian Food Labels" is a great reference and does a deep dive into what D.O.P is and is a great read!
🔪 Instructions
Preheat your oven to 350F. Peel the onion and then cut off the ends. Cut the onion in half (from stem to root end), and then cut each half into 4 wedges to make a total of 8 wedges. Place the sliced onions in a single layer in a baking dish.
Whisk the balsamic vinegar, olive oil, sugar, salt and pepper in a small bowl.
Pour the whisked mixture as evenly over the onions as you can. Cover the dish with aluminum foil, then bake at 350F for 20 minutes.
After 20 minutes, remove the foil and place the baking dish back in the oven for another 20 minutes. Toss the tender onions around in the sauce, and then get ready to enjoy your delicious balsamic onions!
How To Serve Your Balsamic Onions
These balsamic onions are wonderful stirred into pasta or great as a topping for burgers!
They are also perfect as a side dish to accompany your favorite main dishes, or as an antipasto.
There is a printable recipe card below. If you make this dish I'd love to know how it turns out for you! I'd be honored if you left a star rating and your comments to let me and others know what a great recipe this is. 😊
FAQ
The amount of time to cook red onions in the oven will vary according to the temperature you cook them at. In this recipe, bake sliced onions at 350F for around 40 minutes for tender and delicious red onions!
Store any leftover baked balsamic onions in an airtight container in your refrigerator, and consume within 3 days.
There are several ways you can cut an onion for baking in the oven. You can simply cut them in half, or cut them into 4 or 8 wedges, as we do in this recipe. Thick or thin slices are also acceptable!
Some Other Recipes You May Enjoy!
Here are some other recipes which you may enjoy:
- Easy Italian Mushroom Salad Recipe
- Easy And Perfect Spicy Pasta Puttanesca
- Italian Broccoli Recipe With Garlic and Lemon
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I invite you to come along on this food journey with me! Please sign up to get the latest recipes and inspiration for you to expand your food comfort zone! It's an incredible journey, please join me by signing up here.
Cheers!
Grace
Delicious Balsamic Onions
Equipment
- baking dish
Ingredients
- 1 red onion select a large red onion
- 1 tablespoon olive oil
- ¼ cup balsamic vinegar try to use the best quality balsamic that you can
- ⅛ ts salt
- ⅛ ts pepper
- ¼ ts sugar can use white or brown sugar
Instructions
- Preheat your oven to 350F. Peel the onion and then cut off the ends. Cut the onion in half (from stem to root), and then cut each half into 4 wedges to make a total of 8 wedges. Place the sliced onions in a single layer in a baking dish.
- Whisk the balsamic vinegar, olive oil, sugar, salt and pepper in a small bowl.
- Pour the whisked mixture as evenly over the onions as you can. Cover the dish with aluminum foil, then bake at 350F for 20 minutes.
- After 20 minutes, remove the foil and place the baking dish back in the oven for another 20 minutes. Toss the tender onions around in the sauce, and then get ready to enjoy your delicious balsamic onions!
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