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Keto Caramelized Onion Recipe

Rupali | May 26

Keto Caramelized Onion: A Delicious and Healthy Addition to Your Keto Diet

Caramelized onions are a popular ingredient in many dishes, but they are often accompanied by a high amount of carbs and sugars. However, with a few simple modifications, caramelized onions can become a keto-friendly addition to your diet.

Keto Caramelized Onions are a delicious and healthy alternative to traditional caramelized onions. These are made by cooking onions over low heat until they become caramelized, without adding any sugar or high-carb ingredients. They are a flavorful and healthy ingredient that can be used in a variety of keto-friendly recipes.

Benefits of Keto Caramelized Onions

  • Low in carbs: With only a few grams of carbs per serving, keto caramelized onions are a perfect addition to your keto diet.
  • High in fiber: Onions are a great source of fiber, which can help keep you feeling full and satisfied.
  • Packed with nutrients: Onions are a nutrient-dense vegetable that is high in vitamins C and B6, as well as folate and potassium.
  • Versatile: Keto Caramelized Onions can be used in a variety of recipes, from omelets and burgers to soups and stews.

Keto Caramelized Onion

  • Author: Rupali
  • Prep Time: 10 minutes
  • Cook Time: 9-10 hours
  • Total Time: 3 minute
  • Yield: 8 servings 1x


  • 6 onions (660 g), sliced
  • 2 tablespoons (30 ml) of olive oil
  • ½ teaspoon (2 g) of salt


  1. Add the onions, oil, and salt to your Slow Cooker.
  2. Close the lid and cook on LOW for 8 hours.
  3. Open the lid and keep simmering for 1-2 hours until any excess water has evaporated.
  4. Serve and enjoy! Store leftovers in an airtight container in the refrigerator for up to 5 days.

Tip: If you don’t have a Slow Cooker, you may use an Iron-Cast Dutch Oven. The temperature is 200°F for LOW and 250°F for HIGH.


All nutritional data are estimated and based on per-serving amounts.

Net Carbs: 6 g


  • Calories: 63
  • Sugar: 4 g
  • Fat: 4 g
  • Carbohydrates: 7 g
  • Fiber: 1 g
  • Protein: 1 g

Rupali is a cookbook author, Cancer scientist, and Ivy League-trained nutrition professional. She studied cellular science in college and got her degree in molecular biology years later.

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