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Cast iron skillet full of caramelized onions.

How to Caramelize Onions

  • Author: Erin Jensen
  • Prep Time: 5 minutes
  • Cook Time: 20 minutes
  • Total Time: 25 minutes
  • Yield: 1-2 cups 1x
  • Category: How-To
  • Method: Stove Top
  • Cuisine: American


How to Caramelize Onions – an easy, step-by-step tutorial that teaches you how to make caramelized onions! So good!


  • 34 sweet yellow onions, sliced
  • 1 tablespoon olive oil
  • 1/2 teaspoon kosher salt
  • 1/2 teaspoon ground black pepper


  1. Bring large cast iron skillet to medium-high heat. Add olive oil and move it around so that the entire pan is thinly coated.
  2. Add onions and sprinkle with salt and pepper.
  3. Move onions around the pan and bring heat down to medium once onions start to cook down.
  4. Continue cooking onions 15-30 minutes, turning heat down as necessary, until they start to turn golden brown.
  5. Once onions are golden brown move off of the heat and use however you like. 


Keywords: how to caramelize onions