**Slicing the onions.** The thinner you slice the onions the faster they caramelize.
Serving: 1serving | Calories: 632kcal | Carbohydrates: 16g | Protein: 52g | Fat: 38g | Saturated Fat: 19g | Polyunsaturated Fat: 3g | Monounsaturated Fat: 17g | Trans Fat: 2g | Cholesterol: 192mg | Sodium: 483mg | Fiber: 2g | Sugar: 5g | Vitamin A: 411IU | Vitamin C: 7mg | Calcium: 268mg | Iron: 5mg