Caramelized Onion Tomato Jam
This savory-sweet caramelized onion tomato jam is an easy and flavorful condiment that you whip up in less than 1 hour with 6 ingredients only. Perfect for those late summer days when tomato season is in full swing and you’re looking for ways to preserve the sweet harvest. This quick savory jam adds a burst of flavor to burgers, grilled sandwiches, your next charcuterie board, and makes a delicious topping for grilled meat and roast potatoes.
Well balanced: The combination of caramelized red onions, juicy cherry tomatoes, and balsamic vinegar creates a perfectly balanced sweet and savory condiment. One my favorite ways to preserve and enjoy this seasonal produce!
Quick and easy: With just 6 simple ingredients and minimal prep, you can whip up a single or double batch of this one-pot savory jam in less than 1 hour. Cooking from scratch doesn’t have to be complicated!
Versatile: This caramelized onion jam makes a flavorful addition to a variety of summer dishes. Check out the serving suggestions after the recipe.
For more easy condiments, check out my fresh fig chutney and lemon dill dressing.
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Caramelized Onion Tomato Jam
Ingredients
- 8 oz cherry tomatoes halved
- 3 red onions peeled and sliced
- 6 tbsp brown sugar
- 1 cup balsamic vinegar
- 1 tsp fresh thyme
- 1/4 tsp salt
Instructions
- Add chopped tomatoes, sliced onions, balsamic vinegar, brown sugar, fresh thyme, and salt to a large saucepan. Stir well to combine.8 oz cherry tomatoes, 3 red onions, 6 tbsp brown sugar, 1 cup balsamic vinegar, 1 tsp fresh thyme, 1/4 tsp salt
- Bring to a boil on medium-high heat and reduce to low.
- Let the mixture simmer without a lid on, stirring occasionally, until it reaches a jam-like consistency, approximately 30-40 minutes, depending on how juicy your tomatoes are.
- Taste and add a little bit of salt or extra sugar if needed.
- Once the jam has thickened, remove from heat and let it cool slightly.
- Allow the jam to cool completely before storing it in a sterilized glass jar with a lid in the refrigerator for 2-3 weeks.
Video
Notes
Nutrition
Ingredients and substitutions
See the recipe card for full information on ingredients and quantities.
- Tomatoes: Ripe tomatoes – sweet cherry tomatoes work best but you can also use plum tomatoes or Roma tomatoes.
- Onions: Red onions give the jam extra color and a sweet flavor but you can also use white or yellow onions.
- Vinegar: You’ll need 1 cup of balsamic vinegar. Swap balsamic vinegar for red wine vinegar or apple cider vinegar for a tangier flavor.
- Sugar: 6 tbsp brown sugar adds a rich sweetness to the jam.
- Fresh herbs: I use about 1 tsp of fresh thyme leaves but you can also add fresh basil, rosemary, or oregano.
- Salt: Salt rounds out the flavors. Season to taste.
How to make caramelized onion tomato jam
See the recipe card for full information on the method.
- Add all ingredients to a saucepan.
- Stir to combine and bring to a boil.
- Reduce heat and simmer for 30-40 minutes without a lid or until the jam has reached the desired consistency.
- Taste to season with salt, balsamic vinegar, and brown sugar.
Serving
This savory jam can be used to add flavor to a variety of dishes:
Platter: This savory tomato jam makes a great addition to your next cheese board as a perfect accompaniment to various cheeses. It works particularly well with goat cheese, cream cheese, and feta.
Spread: Add the jammy spread to your next grilled lamb sandwich, chicken burger, meatball wrap, cottage cheese egg bake, or puff pastry hot dogs.
Topping: Use it as a topping for roasted vegetables, mashed potatoes, or grilled meats for an extra burst of flavor.
