Egg White Frittata

Directions

1. In a 10-in. ovenproof skillet, saute the mushrooms, onion, red pepper, green pepper, salt, oregano and pepper in oil until vegetables are tender. Beat egg whites until foamy; pour into skillet. Cook for 3 minutes over medium-low heat or until puffed and lightly browned on bottom. Sprinkle with cheese.
2. Bake, uncovered, at 375° for 8-10 minutes or until egg whites are set. Loosen edges and bottom of frittata with a rubber spatula. Invert onto a serving plate; cut into four wedges. Serve immediately.