Sweet and Sour Roasted Onions Recipe

Name: Sweet and Sour Roasted Onions
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 lb small red onions or 1 lb shallot, peeled and cut in halve; 2 tablespoons olive oil; 1 stick celery, finely chopped (optional); 1 garlic clove, finely chopped; 1 teaspoon fresh rosemary, finely chopped; 1 tablespoon concentrated tomato paste (puree in the UK); 3 tablespoons cider vinegar; 3 tablespoons light muscovado sugar; salt, to taste; fresh ground black pepper, to taste

Servings: persons

1
Preheat your oven to 190C/375F/Gas 5.
2
Put your onions in an oven dish that will fit them neatly in one layer.
3
You might want to line the dish with baking paper, as the sauce will caramelise, which can make it quite a pain to clean.
4
Heat the oil in a frying pan and saute the celery over medium heat until soft, for about 5 minutes.
5
If you're not using any celery, just start with the next step, but shorten the frying time to two minutes.
6
Add the garlic and saute for a further five minutes.
7
Remove the pan from the heat and add all the other ingredients, apart from the onions and stir until the sugar has dissolved.
8
Season liberally with salt and pepper and pour the mixture over the onions.
9
Mix well until all the onions are coated evenly.
10
Place in your oven and roast for about one hour, stirring once halfway through.
11
You might want to check after 45 minutes, the onions are done, when they are soft and caramelised.
12
The time depends a bit on their size.

201

kcal

Calories

Fat

Carbs

Protein

Fat Carbs Protein

* Per serving · 4 servings · Values may vary.

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

Brown sugar instead of white sugar adds a deeper, more caramel-like flavor.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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How did you like this recipe?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

You need 10 ingredients. The key ingredients include: 1 lb small red onions or 1 lb shallot, peeled and cut in halve, 2 tablespoons olive oil, 1 stick celery, finely chopped (optional), 1 garlic clove, finely chopped, and more.

Yes, Sweet and Sour Roasted Onions falls under the General category and is a great choice for this type of meal.

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

That's it — enjoy your meal!

Sweet and Sour Roasted Onions

Tips for the best results

Variations & substitutions

My Personal Notes

How did you like this recipe?

Frequently Asked Questions