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A beautifully caramelized onion in a skillet, showcasing golden brown color.

Caramelized Onions

Transform ordinary meals with these sweet and syrupy caramelized onions that pair well with almost anything.
Prep Time 10 minutes
Cook Time 1 hour
Total Time 1 hour 10 minutes
Course Condiment, Side Dish
Cuisine American
Servings 4 servings
Calories 50 kcal

Ingredients
  

Main Ingredients

  • 2-3 large yellow or sweet onions Yellow onions develop robust sweetness; sweet onions (like Vidalia) yield even sweeter results.
  • 2 tablespoons butter or oil (or a mix) Butter adds richness; oil tolerates higher heat.
  • 1 pinch salt Enhances sweetness and draws moisture from onions.
  • 1 splash water, broth, or wine for deglazing Rescues fond from sticking and adds flavor.

Instructions
 

Preparation

  • Slice the onions thinly into 1/8" to 1/4" thick slices for even cooking.
  • Heat butter or oil in a heavy-bottomed skillet over low–medium heat.
  • Add onions and sprinkle with a pinch of salt to draw out moisture.

Cooking

  • Cook slowly, stirring every 5 minutes, allowing a golden crust to develop.
  • Deglaze with water, broth, or wine if onions start to stick.
  • Continue cooking until onions turn deep golden brown, approximately 30 to 60 minutes.

Notes

Caramelized onions can be stored in an airtight container in the fridge for up to 4-5 days or frozen for up to 3 months. Reheat gently in a skillet with a splash of liquid to retain texture.
Keyword Caramelized Onions, comfort food, easy sides, onion recipe, sautéed onions