Preheat oven to 350 degrees Fahrenheit.

Split English muffin in half and toast. Set aside.

Heat a small non-stick skillet over medium heat. Add mushrooms, green onions and bell pepper. Cook, stirring continuously for 2 minutes, or until vegetables are softened. 

Stir egg substitute, pepper and oregano into vegetable mixture. Cook, stirring continuously until egg substitute is set, about 2 minutes.

Spread 2 teaspoons of pizza sauce onto each English muffin half. Spoon a quarter of the egg mixture over pizza sauce and top with a quarter of the cheese. Spoon the remaining egg mixture and cheese evenly on top of the muffins.

Place the muffins on a baking sheet and bake* for 5 minutes, or until cheese is melted.

*Or, bake in a toaster oven at 350 degrees Fahrenheit for 5 minutes.

Source: National Dairy Council