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–+ servings
caramelized onions fill this small jar to the brim in this photo

Slow Cooker Caramelized Onions

Thanks to the magic of slow cooking, you can create these wonderfully buttery, caramelized onions with almost no effort at all. They're great on their own, or as a topping!
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Prep Time: 5 minutes
Cook Time: 8 hours
Total Time: 8 hours 5 minutes
Servings: 12

Ingredients 

  • 4-5 large yellow onions about 6 cups
  • 3 tablespoons butter
  • 3 tablespoons olive oil
  • ¼ teaspoon kosher salt

Instructions

  • Set the crockpot to high heat and add the butter and olive oil. Slice the onions and add them to the crockpot. Sprinkle with salt.
  • Toss the onions to coat with the oils. Let them cook with the lid OFF. Stir the onions occasionally throughout the day, scraping the sides each time.
  • When the onions are browned and softened to your liking, turn off the crock-pot. (This should take about 8 hours.) Serve warm or transfer to an airtight container and store in the refrigerator.

Notes

Total cooking time is approximately 8 hours, but that will vary for different slow cookers and crock-pots.
To freeze the cooked onions, separate them into ½ cup portions and store them in airtight containers or zip-close freezer bags. Thaw in the refrigerator before using.
 

Nutrition

Calories: 88kcal · Carbohydrates: 7g · Protein: 1g · Fat: 6g · Saturated Fat: 2g · Polyunsaturated Fat: 0.5g · Monounsaturated Fat: 3g · Trans Fat: 0.1g · Cholesterol: 8mg · Sodium: 74mg · Potassium: 118mg · Fiber: 1g · Sugar: 3g · Vitamin A: 89IU · Vitamin C: 6mg · Calcium: 19mg · Iron: 0.2mg
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