How many servings does this recipe make?

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

What ingredients do I need for Onion Jam?

You need 10 ingredients. The key ingredients include: 1/4 cup olive oil, 6 onions, medium, sliced thinly, 1 pinch sea salt, 1 tablespoon balsamic vinegar, and more.

Is Onion Jam suitable as general?

Yes, Onion Jam falls under the General category and is a great choice for this type of meal.

How do I store leftover Onion Jam?

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

Onion Jam Recipe – Eats Now

Name: Onion Jam
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1/4 cup olive oil; 6 onions, medium, sliced thinly; 1 pinch sea salt; 1 tablespoon balsamic vinegar; 1/4 cup port wine; 1 sprig fresh thyme; 1/2 cup muscovado sugar; 1 teaspoon mustard seeds; 1/2 teaspoon red pepper flakes; 1/4 cup tomatoes, finely chopped

Try this homemade Onion Jam recipe the whole family will love. Made with olive oil, onions, salt and balsamic vinegar. Easy step-by-step instructions in…

This Onion Jam relies on simple, everyday ingredients such as olive oil, sea salt, balsamic vinegar and port wine. It comes together quickly and makes 4 servings, at about 295 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.

It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.

Updated Jun 30, 2026

Serves 4 General

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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Onion Jam

Tips for the best results

Variations & substitutions

My Personal Notes

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