Whole Wheat Breakfast Pizzas

Ingredients (9)

• 0.25 cup Colby and Monterey Jack cheese mixture low-fat, shredded
• 0.5 cup egg substitute
• 0.5 small red bell pepper diced
• 2 small button mushrooms sliced
• 2 small green onions finely chopped
• 1 tsp light tub margarine
• 2 tbsp milk fat-free
• 1 whole-wheat English muffins split in half
• 1 small tomato seeded and chopped