Nutrition Facts for Kittencal's caramelized onions

Kittencal's Caramelized Onions

Elevate your dishes with the deep, sweet-savory flavor of Kittencal’s Caramelized Onions, an irresistible recipe that transforms simple yellow onions into a golden, velvety topping perfect for burgers, sandwiches, or charcuterie boards. With just a handful of kitchen staples—unsalted butter, olive oil, and the optional addition of sugar for sweetness or balsamic vinegar for a tangy finish—this recipe unlocks the magic of patience through a slow, 45-minute caramelization process. The result? Richly golden onions with layers of complex flavor, ideal for enhancing everything from pastas to pizzas. Whether you’re meal-prepping or serving it fresh, these melt-in-your-mouth caramelized onions will take your cooking to gourmet levels.

Nutriscore Rating: 73/100
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Image of Kittencal's Caramelized Onions
Prep Time:10 mins
Cook Time:45 mins
Total Time:55 mins
Servings: 4

Ingredients

  • 4 large Yellow onions
  • 2 tablespoons Unsalted butter
  • 2 tablespoons Olive oil
  • 1 teaspoon Sugar (optional, for enhanced sweetness)
  • 0.5 teaspoon Salt
  • 2 teaspoons Balsamic vinegar (optional, for depth of flavor)

Directions

Step 1

Peel and slice the onions thinly into half-moon shapes.

Step 2

In a large skillet, heat the butter and olive oil over medium heat until the butter is fully melted and begins to foam.

Step 3

Add the sliced onions to the skillet, spreading them out in an even layer.

Step 4

Sprinkle the salt (and optional sugar, if desired) over the onions to help draw out their natural moisture.

Step 5

Reduce the heat to medium-low and cook the onions, stirring every 5–7 minutes to ensure even caramelization.

Step 6

If the onions start to stick to the pan, deglaze with a splash of water, stirring to release the browned bits.

Step 7

After 30–35 minutes, the onions should be golden brown and tender. For enhanced depth of flavor, stir in balsamic vinegar and cook for an additional 5 minutes.

Step 8

Remove the skillet from heat and allow the onions to cool slightly before serving or using them as a topping.

Nutrition Facts

Serving size (673.2g)
Amount per serving % Daily Value*
Calories 722.1
Total Fat 52.5g 0%
Saturated Fat 18.6g 0%
Polyunsaturated Fat 2.7g
Cholesterol 62mg 0%
Sodium 1209.0mg 0%
Total Carbohydrate 62.7g 0%
Dietary Fiber 10.4g 0%
Total Sugars 31.4g
Protein 6.8g 0%
Vitamin D 0IU 0%
Calcium 134.4mg 0%
Iron 1.3mg 0%
Potassium 896.5mg 0%
*The % Daily Value tells you how much a nutrient in a serving of food contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.

Source of Calories

Fat: 63.0%
Protein: 3.6%
Carbs: 33.4%