1.) Preheat broiler.
2.) Melt butter in a 10-inch ovenproof skillet over medium heat. Add onions and garlic; cook 5 minutes or until tender, stirring occasionally.
3.) Combine egg substitute, salt, pepper, and hot sauce. Stir with a whisk; pour evenly over onion mixture. Reduce heat to medium-low; cook 8 minutes or until almost set (mixture will be wet on top).
4.) Broil frittata 3 minutes; sprinkle with cheese, and broil 1 minute or until cheese melts. Let stand 5 minutes before serving. Cut into 6 wedges.
4.1g Fat / 2.6 Saturated