Sugar-Free Sweet and Tangy Onion Jam

Elevate your condiment game with this irresistible Sugar-Free Sweet and Tangy Onion Jam! Packed with the rich, caramelized flavor of slow-cooked yellow onions, this jam is sweetened naturally with granulated monk fruit for a guilt-free indulgence. A harmonious blend of balsamic vinegar, apple cider vinegar, and a touch of fresh thyme creates a perfectly balanced tangy-sweet profile, while healthy olive oil enhances its silky texture. This low-carb, keto-friendly recipe is as versatile as it is delicious—ideal for pairing with cheese boards, spreading on sandwiches, or serving alongside roasted meats. Easy to prepare with minimal hands-on time, this onion jam keeps fresh for up to two weeks, making it a fantastic make-ahead condiment for all occasions.

Nutriscore Rating: 73/100

Prep Time:10 mins

Cook Time:60 mins

Total Time:70 mins

Servings: 8

Ingredients

• 6 cups (thinly sliced) Yellow onions
• 2 tablespoons Olive oil
• 1 cup Balsamic vinegar
• 2 tablespoons Apple cider vinegar
• 1 teaspoon Salt
• 1 teaspoon Ground black pepper
• 2 tablespoons Granulated monk fruit sweetener (or erythritol)
• 1 teaspoon Fresh thyme leaves (optional)
• 1 cup Water

Directions

Step 1

Peel and thinly slice the yellow onions into half-moons, ensuring even thickness for consistent cooking.

Step 2

In a large heavy-bottomed skillet or saucepan, heat the olive oil over medium heat.

Step 3

Add the sliced onions to the skillet and stir to coat them in the oil. Cook for 10-15 minutes, stirring occasionally, until the onions are softened and starting to turn golden.

Step 4

Reduce the heat to low and add 1/4 cup of the balsamic vinegar and the water. Cover the skillet with a lid, leaving it slightly ajar to allow steam to escape, and cook the onions slowly for 30 minutes, stirring occasionally. Add more water (a tablespoon at a time), if needed, to prevent scorching.

Step 5

After 30 minutes, remove the lid and increase the heat to medium-low. Stir in the remaining 3/4 cup of balsamic vinegar, the apple cider vinegar, salt, ground black pepper, and granulated monk fruit sweetener. Cook uncovered, stirring often, for another 15 minutes until the mixture thickens to a jam-like consistency.

Step 6

Taste the jam and adjust seasoning if necessary. If you prefer more tang, add a splash of apple cider vinegar. For additional sweetness, add a small pinch of extra monk fruit sweetener.

Step 7

If you’re using fresh thyme leaves, stir them in toward the end of the cooking process for a subtle herbaceous note.

Step 8

Let the onion jam cool to room temperature before transferring it to an airtight container. Store in the refrigerator for up to 2 weeks.

Step 9

Serve the sugar-free sweet and tangy onion jam with cheese, crackers, grilled meats, or as a condiment for sandwiches and wraps.

Nutrition Facts

Serving size	(1874.6g)

Amount per serving	% Daily Value*
Calories	1002.8

Total Fat 29.3g	0%
Saturated Fat 4.9g	0%
Polyunsaturated Fat 2.7g
Cholesterol 0mg	0%
Sodium 2478.3mg	0%
Total Carbohydrate 175.2g	0%
Dietary Fiber 23.4g	0%
Total Sugars 92.5g
Protein 16.1g	0%

Vitamin D 0IU	0%
Calcium 408.3mg	0%
Iron 6.3mg	0%
Potassium 2523.5mg	0%

*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 25.6%

Protein: 6.3%

Carbs: 68.1%