Red Onion Confit Recipe

Transform ordinary red onions into a sweet and tangy culinary masterpiece! This Red Onion Confit recipe delivers a vibrant purple hue and irresistible flavor, perfect for topping grilled steaks, or as a sensational filling for calzones alongside oven-dried tomatoes, roasted peppers, and fresh mozzarella. The slow-cooking process creates incredibly tender onions with a delightful balance of sweetness and acidity. Prepare to impress your taste buds!

Prep Time 10 mins
Cook Time 35 mins
Calories 488.6 kcal
Protein 3g
Rating 5.0 (1 Reviews)
Red Onion Confit 28

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Recipe Author

Chef Forktionary, author of this recipe

Recipe adapted from Food.com. Standardized by Forktionary.

Ingredients for Red Onion Confit

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How to Make Red Onion Confit

  1. Thinly slice 2 large red onions using a mandoline slicer (or sharp knife) for even consistency.
  2. Heat 2 tablespoons of olive oil in a large pan over low heat.
  3. Add the sliced onions and cook gently, stirring occasionally, for about 15-20 minutes, until softened and translucent.
  4. Stir in 1/4 cup red wine vinegar and 2 tablespoons of Marsala wine.
  5. Continue to simmer, uncovered, for another 10-15 minutes, or until most of the liquid has evaporated and the onions are deeply caramelized and a rich purple color.
  6. Season with salt and pepper to taste. Allow to cool before using as a topping or calzone filling.

Nutrition Information (Approximate per serving)

Sodium

0 g

Sugar

32g

Fat

18g

Carbs

6g