Grilled Sirloin & Caramelized Onion Flatbread Nutrition Information Serves: 6 Calories: 300 Fat: 10 Carbohydrates: 31 Sodium: 520 Fiber: 6 Protein: 24 Cholesterol: 55 Type: Entree Prep Time:  5 mins Cook Time:  50 mins Total Time:  55 mins Save Print Ingredients Caramelized Onions: 1