In a large microwave-safe mug sprayed with nonstick spray, microwave spinach and mushrooms for 1 1/2 minutes, or until softened.
Blot away excess moisture.
Add egg substitute, stir, and microwave for 1 minute.
Mix in tomato and cheese wedge, breaking the wedge into pieces.
Microwave for 1 minute or until set.
Top with avocado and enjoy!