Dig in! Caramelized Onion Jam with Balsamic Vinegar 2

This savory sweet caramelized onion jam recipe is a great way to preserve onions from the garden.  Use this onion jam as a condiment to spice up meat dishes or slather it on a grilled cheese sandwich for a divine meal.

This savory sweet caramelized onion jam is a great way to preserve onions from the garden. Slather it on a grilled cheese sandwich for a divine meal.

It’s no secret in my family that I love onions. I love them in every shape and form – onions make a near-daily appearance in my culinary repertoire.

I think that French Onion soup is the perfect soup. And a sandwich really isn’t a sandwich without the pungent crunchiness of the raw bulb.

But even I can admit that sometimes a slice of that sulfur-y goodness isn’t the best flavor choice.

The solution is simple really – this caramelized onion jam recipe with balsamic vinegar.

That’s right – I said caramelized onion jam.


Caramelized onion jam recipe

Balsamic onion jam recipe delivers a sweet, rich, caramelized goodness with a savory bite.

This is definitely the type of jam that elevates an ordinary grilled cheese sandwich to something a bit divine and altogether wonderful.

Top a round of brie with the stuff and wrap it in puff pastry to make the world’s simplest, and dare I say tastiest, hors d’oeuvre.

This recipe calls for humble onions, a bit of sugar, a few herbs and seasonings, and balsamic vinegar.

This is not the place to break out the expensive imported stuff either – a budget friendly, grocery store balsamic vinegar is perfectly fine to use here.

★ Did you make this recipe? Don’t forget to give it a star rating below!

Caramelized Onion Jam with Balsamic Vinegar
Prep Time
15 mins
Cook Time
15 mins
Total Time
30 mins
Put up a few jars of this yummy caramelized onion jam -- by way of canner or freezer -- to treat your inner allium lover!
Course: Side Dish
Servings: 32 servings
Calories: 35 kcal
Author: Devon Young
  • 2 pounds yellow onions sliced
  • 2 T. olive oil
  • ¾ cup organic sugar
  • ¾ cup balsamic vinegar
  • 1 T. finely minced summer savory or try a combination of thyme and rosemary
  • 1 tsp. sea salt
  • ½ tsp. black pepper crushed
  1. Put olive oil and onions in a large, heavy bottomed saucepan. Cook over medium-high heat stirring only occasionally; cook until golden, about 10-15 minutes.
  2. Add sugar and balsamic vinegar and cook until thickened and somewhat syrup-y. Add salt, pepper, and herbs.
  3. Ladle into sterilized half pint jars, leaving about ½” headspace. Wipe rims clean and place prepared lids and rings on finger tight.
  4. If you cannot test for pH, it is safest to freeze the jam at this point. Be sure to leave sufficient headspace for expansion.
  5. Process in a water bath canner at a rolling boil for 15 minutes. After processing, carefully remove jars and allow to cool undisturbed for 24 hours. Check for seal and store in pantry for up to a year; refrigerate after opening.
Recipe Notes

With the addition of ample vinegar, this recipe registers a water bath canning method safe pH of 3.9 with a freshly calibrated pH meter. Food safety guidelines indicate that is safe to water bath can food with a pH of 4.2 or lower; if you do not have a pH meter, it may be wise to freeze this caramelized onion jam due to variation in balsamic vinegar acidity.

This savory sweet caramelized onion jam is a great way to preserve onions from the garden. The word

This post may contain affiliate links; I'll earn a small commission if you choose to make a purchase.

About Devon Young

Devon is homesteader, herbalist, mother and blogger in the beautiful Willamette Valley of Oregon. Devon writes about medicinal herbs, foraging, homesteading, and food preservation at NittyGrittyLife.com, as well as various other online and print publications.

Leave a comment

Your email address will not be published. Required fields are marked *

2 thoughts on “Dig in! Caramelized Onion Jam with Balsamic Vinegar

  • Christy Roppel

    QUESTION: How do you test for PH? I’ve not seen this “requirement” in a recipe before.
    Thank you!

    • Kris Bordessa

      It’s critical that you use safe canning methods. Those recipes are assured of maintaining a safe pH — you just need to follow the recipe. If you’re using approved recipes, you shouldn’t need to test the pH yourself (though you certainly could!). Devon is just indicating here that her recipe has achieved the necessary pH level so you know it’s safe. If you want to test your own, this is the kind of tool she uses: http://amzn.to/2zXBQAR