Quick Onion Confit

Onion confit
Laurence Mouton / Getty Images
Prep: 5 mins
Cook: 35 mins
Total: 40 mins
Servings: 12 servings
Nutrition Facts (per serving)
41 Calories
2g Fat
6g Carbs
1g Protein
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Nutrition Facts
Servings: 12
Amount per serving
Calories 41
% Daily Value*
Total Fat 2g 3%
Saturated Fat 1g 6%
Cholesterol 5mg 2%
Sodium 61mg 3%
Total Carbohydrate 6g 2%
Dietary Fiber 1g 2%
Total Sugars 3g
Protein 1g
Vitamin C 2mg 12%
Calcium 13mg 1%
Iron 0mg 1%
Potassium 81mg 2%
*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.)

Confit by definition is a preserved ingredient. French cuisine employs the use of duck, tomato, and cherry confit, etc. The onions in this recipe are cooked down to a marmalade-like consistency, and then allowed to cool to room temperature before serving. This recipe is not preserved, so it is technically not a confit, but a quick jam.

Cook’s note: Be very careful to cook the onions gently. One bit of burned onion will give the whole recipe a bitter flavor.


  • 2 tablespoons unsalted butter

  • 6 medium chopped yellow onions

  • 2 teaspoons demerara sugar

  • 1/4 teaspoon salt

  • 1/4 teaspoon black pepper

  • 1/2 teaspoon dried thyme

  • 2 teaspoons balsamic vinegar

Steps to Make It

  1. Preheat oven to 350 degrees.

  2. Melt the butter in a large skillet over medium heat. Add the onions and demerara sugar and sauté, stirring frequently, until the onions become tender and start to turn golden.

  3. Sprinkle with salt, pepper, and thyme. Stir the mixture and transfer the skillet to the preheated oven.

  4. Cook for 20-30 minutes, stirring occasionally, until the onions are wilted, very soft, and are a medium gold throughout.

  5. Add the vinegar during the last 5 minutes of cooking.

  6. Remove from oven, cool the onions in the pan until they reach room temperature, and then serve.