I made three at once but you can make as many as you think you'll need for your event, just change up the number of onions you use.
Calories: 947kcal | Carbohydrates: 172g | Protein: 34g | Fat: 13g | Saturated Fat: 5g | Polyunsaturated Fat: 2g | Monounsaturated Fat: 4g | Trans Fat: 0.03g | Cholesterol: 260mg | Sodium: 1317mg | Potassium: 842mg | Fiber: 9g | Sugar: 16g | Vitamin A: 991IU | Vitamin C: 17mg | Calcium: 283mg | Iron: 11mg