1.Microwave the spinach on high for 2 1/2 minutes. Drain completely.
2.Line a 12 cup muffin tray with foil baking cups. Spray the cups with cooking spray.
3.Combine the egg substitute, cheese, mushrooms, spinach and onions in a bowl.
4.Add hot pepper to taste.
5.Divide evenly among the cups.
6.Bake at 350 for 20 minutes or until knife inserted comes out clean.
7.May then be frozen if desired.