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Caramelized onions cooking in skillet close up

Caramelized Onions

Slow-cooked onions transformed into sweet, golden perfection—rich, and perfect for burgers, pastas, soups, and more.

  • Total Time: 50 minutes
  • Yield: 1½ cups 1x

Ingredients

Scale

  • 2–3 large yellow onions, thinly sliced

  • 2 tablespoons olive oil, butter, or a mix

  • A pinch of salt

  • ½ teaspoon sugar (optional)

  • 1 tablespoon balsamic or apple cider vinegar (optional)

Instructions

  • Peel and slice onions evenly, about 1/8-inch thick.

  • Heat a large skillet over medium-low heat and add oil, butter, or both.

  • Add onions and salt, stir to coat in fat.

  • Cook slowly, stirring every 5–10 minutes to prevent burning.

  • After 20 minutes, optionally add sugar to enhance browning.

  • Continue cooking 35–45 minutes until onions are deep golden and jammy.

  • Add vinegar in the last 5 minutes for added depth, if desired.

 

  • Let cool before storing or serving.

Notes

Use a mix of yellow and red onions for layered flavor. Caramelized onions freeze well—store in small portions for easy use in future meals.

  • Author: Ava
  • Prep Time: 5 minutes
  • Cook Time: 45 minutes
  • Category: Condiment
  • Method: Stovetop
  • Cuisine: French-Inspired

Nutrition

  • Serving Size: 2 tablespoons
  • Calories: 50
  • Sugar: 2g
  • Sodium: 50mg
  • Fat: 3.5g
  • Saturated Fat: 1.5g
  • Unsaturated Fat: 2g
  • Trans Fat: 0g
  • Carbohydrates: 4g
  • Fiber: 1g
  • Protein: 0g
  • Cholesterol: 5mg

Keywords: aramelized onions, onion recipe, burger topping, slow cooked onions, savory condiment