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caramelized onion on a decor blue plate with fork, on a black background, close-up side view.
Olivia

Caramelized Onions

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Caramelized onions cooked slowly until sweet and golden brown. A versatile ingredient perfect for countless savory dishes.
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Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Servings: 4
Course: Side Dish
Cuisine: American
Calories: 151
Ingredients Equipment Cooking Instructions Nutrition Notes

Ingredients
  

  • 4 large onions thinly sliced
  • 2 tablespoons olive oil
  • 1 tablespoon butter optional
  • 1 teaspoon sugar optional
  • Salt to taste
  • Black pepper to taste

Equipment

Frying Pan
Frying Pan
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08/25/2026 03:00 pm GMT
Large Deep Frying Pan

Cooking Instructions
 

  1. Peel and thinly slice the onions.
  2. Heat olive oil and butter in a large skillet over medium-low heat.
  3. Add the onions and stir to coat evenly.
  4. Sprinkle with a small pinch of salt.
  5. Cook slowly, stirring every few minutes.
  6. Continue cooking for 25-35 minutes as the onions soften and darken.
  7. Add sugar if desired to encourage browning.
  8. Stir more frequently during the final 10 minutes.
  9. Season with black pepper to taste.
  10. Serve warm or store for later use.

Nutrition

Calories: 151kcalCarbohydrates: 15gProtein: 2gFat: 10gSaturated Fat: 3gPolyunsaturated Fat: 1gMonounsaturated Fat: 6gTrans Fat: 0.1gCholesterol: 8mgSodium: 29mgPotassium: 220mgFiber: 3gSugar: 7gVitamin A: 90IUVitamin C: 11mgCalcium: 35mgIron: 0.4mg

Notes

• Low heat is the secret to proper caramelization
• Yellow onions produce the classic flavor and sweetness
• Store refrigerated in an airtight container for up to 5 days

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