Red Onion Jam Recipe

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Updated February 27, 2025

Joshua Bousel

Although it may look like a pile of caramelized onions, slowly reduced red wine and balsamic vinegar make this sweet, fruity, and tart onion jam so much more.

Red Onion Jam Recipe

Cook 75 mins

Active 75 mins

Cooling Time 15 mins

Total 90 mins

Serves 8 servings

Makes 1 cup

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2 tablespoons olive oil
2 pounds red onions, halved and thinly sliced
1 cup dry red wine
1/3 cup light brown sugar
1 tablespoon chopped fresh thyme
2 tablespoons balsamic vinegar
1/2 teaspoon Kosher salt, plus more to taste
1/2 teaspoon freshly ground black pepper, plus more to taste

Heat olive oil in a medium skillet over medium heat until shimmering. Add onions and cook until softened and just translucent, 8 to 10 minutes, stirring occasionally.
Add in wine, sugar, thyme, vinegar, and salt. Bring to a boil, then reduce heat low, and let simmer until liquid thickens and becomes syrupy, about 1 hour, stirring occasionally. Season with additional salt and pepper to taste. Transfer onion jam to a bowl and let cool, then serve or store in an airtight container in the refrigerator for up to 2 weeks, letting onion jam return to room temperature before using.

Nutrition Facts (per serving)
125	Calories
4g	Fat
20g	Carbs
2g	Protein

Nutrition Facts
Servings: 8
Amount per serving
Calories	125
% Daily Value*
Total Fat 4g	5%
Saturated Fat 1g	3%
Cholesterol 0mg	0%
Sodium 105mg	5%
Total Carbohydrate 20g	7%
Dietary Fiber 2g	6%
Total Sugars 13g
Protein 2g
Vitamin C 6mg	32%
Calcium 35mg	3%
Iron 1mg	3%
Potassium 225mg	5%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

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