Heat olive oil in a large skillet (use a skillet with a lid).
Add onions to skillet and pinch of salt; cover with a lid and cook over medium-low heat for 12 to 15 minutes, or until tender, stirring occasionally.
Remove lid and continue to cook over medium heat for 3 to 5 minutes, or until golden, stirring frequently.
Slowly add vegetable broth and balsamic vinegar; cook and stir over medium heat until liquid evaporates; about 1 minute.
Season with salt and pepper and remove from heat.
Balsamic Caramelized Onions can be added to steaks, burgers, pizzas, sandwiches, etc...
Calories: 40 kcal | Carbohydrates: 5 g | Protein: 0 g | Fat: 1 g | Saturated Fat: 0 g | Cholesterol: 0 mg | Sodium: 104 mg | Potassium: 82 mg | Fiber: 0 g | Sugar: 2 g | Vitamin A: 15 IU | Vitamin C: 4.2 mg | Calcium: 13 mg | Iron: 0.1 mg | Net Carbs: 5 g
Nutritional info is an estimate and provided as courtesy. Values may vary according to the ingredients and tools used. Please use your preferred nutritional calculator for more detailed info.