Savory Blueberry and Caramelized Red Onion Jam

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Savory blueberry and caramelized red onion jam is a decadent addition to your next burger or cheese board! Flavored with red wine, balsamic vinegar, and thyme, this jam a truly exceptional and complex topping to pair with meats and cheeses.

Blueberry and caramelized red onion jam

It’s no secret that I love crostini. Put a little deliciousness on a toasty piece of bread and it’s one of my favorite things in the world. It’s easy to prepare and makes you feel fancy, which is a win-win in my book.

I’ve recently decided we should add a weekly crostini-and-salad night to our regular cooking schedule, kind of like people do Taco Tuesdays or Friday night pizza. (Great idea, right?? Who’s with me for crostini night? So many possibilities!)

So for the inaugural crostini night (still not sure what day of the week we’re landing on) I wanted to make a recipe using steak and blue cheese.

But I realized it needed a little extra something on top to balance out the savory, pungent flavors of the other ingredients. It needed a nice, gourmet jam — preferably with some balsamic vinegar or a little red wine in it. And caramelized onions.

My husband (who I’ve nicknamed the Blueberry Monster for his insatiable love of the fruit) suggested adding blueberries. Sounded good to me!

Sweet and savory blueberry and caramelized red onion jam recipe in jar with crostini

You may think blueberries and onions sound strange together, but sweet and savory jams have seen a huge increase in popularity in the last few years. They actually work really well together, in the right context!

So while this blueberry and red onion jam recipe is not what you want to put between layers of a cake, it’s ohhhhh so good paired with some red meat or blue cheese. I’d use this jam for burgers or serve it with a fancy cheese board.

Sweet and savory blueberry and caramelized red onion jam recipe in jar with spoon

How to make savory blueberry and red onion jam

I started by caramelizing some finely diced red onion with a few sprigs of fresh thyme to bring out the natural sugars. I chose red onion for its comparatively sweet flavor, the jamminess it has when cooked down, and the red-purple coloring that would add to the lovely hue of the berries.

Once the red onion was caramelized, I added the blueberries, along with some balsamic vinegar, honey, brown sugar, and red wine. After a few minutes of simmering, the vinegar and wine are reduced, and the blueberries are tender and ready to pop. I popped the blueberries, added just a splash of lemon juice, and gave it a good stir. It was a little syrupy when warm, but it thickened up nicely in the fridge!

The end result was a luscious blueberry and red onion jam with a well-balanced and decadent sweet-and-savory flavor. Just what I had envisioned! It was sweet enough to contrast with the blue cheese but with all kinds of complex and savory undertones.

Sweet and savory blueberry and caramelized red onion jam on crostini with blue cheese

Blueberry and onion jam uses

So what do you do with this unique blueberry and caramelized onion jam recipe? Here are a few ideas to get you started:

  • Use as a topping for burgers
  • Add to a cheese board (especially good paired with blue cheese!)
  • Top crostini (like this blue cheese and steak crostini!)
  • Use as a sauce for pork chops or grilled chicken
  • Use as a spread for a turkey or ham and cheese sandwich
  • Add to bbq sauce
  • Spread over cream cheese for a party dip
  • Slather over biscuits or on fried chicken
  • Top a cornbread waffle
  • Spread it on savory scones

Overhead shot of sweet and savory blueberry and caramelized red onion jam on crostini

For more delicious crostini ideas, check out these recipes:

Savory Blueberry and Red Onion Jam

5 from 4 votes
Print Pin Rate
Course: Condiment
Cuisine: American
Keyword: onion jam, savory jam
Prep Time: 5 minutes
Cook Time: 40 minutes
Total Time: 45 minutes
Servings: 12 oz
Author: Caroline Lindsey


  • 1 tbsp olive oil
  • 1 medium red onion diced (about 2 cups)
  • several sprigs fresh thyme
  • 1/2 tsp kosher salt
  • 1/4 tsp freshly ground pepper
  • 2 cups blueberries
  • 2 tbsp balsamic vinegar
  • 1/4 cup honey
  • 2 tbsp brown sugar
  • 1/4 cup red wine
  • 1 tsp lemon juice
This recipe card may include affiliate links. When you buy through links on my site, I may earn a commission.


  • In a Dutch oven, heat olive oil over medium heat. Add onion, salt, pepper, and thyme, and reduce to medium low. Cook for 30 -35 minutes or until caramelized, stirring occasionally.
  • Add blueberries, vinegar, brown sugar, honey, and red wine and cook until berries are enlarged and about to burst and liquid is reduced, about 5-10 minutes. Add lemon juice and stir, smashing berries. Remove thyme stems.
  • Remove from heat and cool to room temperature. Spoon into a clean jar and refrigerate until thickened. Use to top crostini or burgers.
Tried this recipe?Mention @pinchmeimeating or tag #pinchmeimeating!

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  • Reply
    October 16, 2019 at 6:56 am

    5 stars
    Hello Caroline!
    The pictures are amazing. I love blueberries so much but prefer to eat them fresh as can be. I’m amazed to learn that blueberries and onions go sooo good together. I would never have thought of this combination. I think it would be perfect as part of a meat and cheese plate and would be good on absolutely everything grilled (or probably on hot dogs and even scrambled eggs). The next time I have plenty of blueberries, I’m giving this a try. Thank you for the recipe. Got so much inspiration. Your blog is fantastic, and I appreciate all the hard work that goes into it.

    • Reply
      Caroline Lindsey
      October 18, 2019 at 9:13 am

      Thanks so much, Ann! Your comment really made my day! This jam is definitely great for a meat and cheese plate, or as a gourmet burger topping. Hope you enjoy it when you get a chance to make it!

  • Reply
    Stacy Drury
    January 3, 2021 at 8:43 pm

    5 stars
    If you’re done with the sweet blueberry desserts but still have some on hand – this is amazing with goat cheese on a cheese plate! Looking forward to trying it on a burger!

    • Reply
      Caroline Lindsey
      January 4, 2021 at 10:56 am

      That’s so awesome! Both of those are great ideas! Thanks for your comment!

  • Reply
    February 6, 2021 at 10:42 am

    5 stars
    My husband could be referred to as the “Blueberry Monster II.” I wanted to make him a savory breakfast casserole with blueberries and I was wondering what veggies go with blueberries. This will work perfectly because he also loves red onions! Thanks.

    • Reply
      Caroline Lindsey
      February 10, 2021 at 9:51 am

      I hope your breakfast casserole is outstanding and that your Blueberry Monster II loves it!

  • Reply
    February 25, 2021 at 10:19 am

    Can I preserve this jam in a water bath canner? It sounds delicious!

    • Reply
      Caroline Lindsey
      March 22, 2021 at 12:15 pm

      Hi Marilyn! I’m afraid I don’t know much about shelf-stable canning so I unfortunately can’t give you an answer to that. It would work as a freezer jam though, if you wanted to freeze some for later!

  • Reply
    February 26, 2021 at 7:19 pm

    Would this still work with frozen blueberries?

    • Reply
      Caroline Lindsey
      March 22, 2021 at 12:13 pm

      I haven’t tried it with frozen blueberries but I don’t see why it wouldn’t work!

  • Reply
    March 7, 2021 at 8:34 pm

    5 stars
    This is outstanding! I made it last weekend for a challenge and have had it with goat cheese on an English muffin for breakfast most days this week. I made one for my parents to try yesterday and they loved it! Now gearing up for a double batch!

    • Reply
      Caroline Lindsey
      March 22, 2021 at 12:04 pm

      That sounds like an incredible breakfast idea! I love breakfasts that aren’t too sweet. I’ll have to try this!

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