Grilled Onions: the recipe for a quick and appetizing side dish

Total time: 10 min + resting time
Difficulty: Low
Serves: 4 people
By Cookist
Red onions
Aromatic herbs
Extra virgin olive oil

Grilled onions are a delicious and appetizing side dish, ideal to serve with burgers, fish and steak dishes with both strong and delicate flavors. You can also lay them on crispy bread croutons, garnish them with a cream cheese and serve them as a delicious appetizer. For this recipe, use the red onions as they are the best for grilling because of their sweet flavor.

Quick and easy, you can make it in no time. Grilled red onions are versatile and delicious, simply cut the onions into slices, grill them on a hot plate and finally season them with oil, salt and a mix of fresh herbs. Unlike caramelized onions that are cooked at medium-low heat, make sure you grill onions at high heat. So let’s find out how to make them by following the step-by-step procedure and tips.

Tips for Grilled Red Onions

You can season your grilled onions with extra virgin olive oil, but also with balsamic vinegar, apple vinegar or a few drops of lemon juice.

You can flavor them with the aromatic herbs you like best such as sage, thyme, rosemary, mint, dill or basil.

If you love spicy flavors, add a pinch of chili powder as well.

To avoid tears while cutting the onions, we suggest some small tips. Try putting onions in a bowl with water and vinegar for half an hour; the action of the vinegar will help to make them even more digestible.

You can also grill the whole onion if you want.

How to store Grilled Onions

Grilled onions can be stored in an airtight container for up to 3 days in the refrigerator. Freezing is not recommended.

How to make Grilled Onions


Peel the onions and wash them well under fresh running water; cut them lengthwise and cut into thick slices (1), then insert some toothpicks that will help you not to make them fall apart during cooking.


Grease a grill well and put it on the fire; once hot, arrange the onions (2) and grill them for 3 minutes; turn them gently with the help of the toothpick and continue cooking for another 3 minutes.


Once cooked, remove the toothpicks from the onions and arrange them on a serving dish. Season them with a mix of chopped aromatic herbs (3) and then a pinch of salt.


Drizzle with a drizzle of oil (4) and let it rest in the refrigerator for about 30 minutes, covered with a sheet of cling film.


After the resting time, remove the foil and serve your grilled onions as a delicious side dish (5).

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