Spinach Mushroom Omelet

Ingredients

• 1 egg
• 3 egg whites
• 1 tablespoon grated Parmesan cheese
• 1 tablespoon shredded reduced-fat Cheddar cheese
• 1/4 teaspoon salt
• 1/8 teaspoon red pepper flakes
• 1/8 teaspoon garlic powder
• 1/8 teaspoon ground nutmeg
• 1/8 teaspoon ground black pepper
• 1/2 teaspoon olive oil
• 1/2 cup sliced fresh mushrooms
• 1/4 cup diced green onion
• 2 tablespoons finely chopped red bell pepper
• 1 cup torn fresh spinach
• 1/2 cup diced fresh tomato