Onion Jam Recipe

This homemade onion jam recipe is a game-changer! Inspired by a market find that had my husband licking the jar clean, this recipe elevates simple cold cuts to gourmet status. Imagine perfectly caramelized onions, bursting with sweet and savory flavor, the perfect condiment for sandwiches, burgers, or even as a side dish. Easy to make and even easier to devour, this recipe is a must-try for condiment lovers!

Prep Time 15 mins
Cook Time 45 mins
Calories 1972 kcal
Protein 32g
Rating Be the first
Onion Jam 39

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Onion Jam

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How to Make Onion Jam

  1. Peel and thinly slice 1 kg of red onions.
  2. In a large, heavy-based pot, heat 100ml of olive oil over medium heat. Add the sliced onions and stir frequently until deeply caramelized (about 20-25 minutes).
  3. Add 1 tbsp of mustard seeds and cook for 2 minutes, stirring constantly.
  4. Stir in 100g of brown sugar and cook for another 2 minutes.
  5. Add 50ml balsamic vinegar, 2 tbsp red wine vinegar, 1 tsp salt, and 1/2 tsp black pepper. Reduce heat to low, and simmer gently for 5 minutes, allowing the flavors to meld.
  6. Carefully pour the hot onion jam into sterilized jars, leaving about 1/2 inch of headspace. Alternatively, store in a clean, airtight container in the refrigerator for immediate use (consume within 2-4 hours).
  7. For longer storage, seal the jars tightly and let them cool completely before refrigerating. The jam will keep in the refrigerator for up to 4 weeks.
  8. Once a jar is opened, refrigerate and consume within 1 week for best quality.

Nutrition Information (Approximate per serving)

Sodium

5 g

Sugar

1295g

Fat

30g

Carbs

129g

Frequently Asked Questions

How long does it take to make Onion Jam?

Onion Jam takes about 60 minutes from start to finish — roughly 15 minutes to prepare and 45 minutes to cook.

How many calories are in Onion Jam?

Onion Jam has approximately 1972 calories per serving, with about 32 g protein, 129 g carbohydrates and 71 g fat.

What ingredients do I need for Onion Jam?

The key ingredients for Onion Jam are Oil, Onions, Brown Sugar, Mustard Seeds, Balsamic Vinegar, Sweet Chili Sauce. See the full list with measurements above.

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