Ingredients:
1 tablespoon margarine or butter
1 cup chopped onions
2 { 4.5 ~ ounce } cans Chopped Green Chiles, drained
1 1/2 cups  shredded Cheddar cheese
1 1/2 cups  shredded Monterey Jack cheese
3 eggs plus 2 egg whites
3/4 cup sour cream
1/4 to 1/2 teaspoon crushed red pepper flakes
1 cup chopped tomato
Preparation Directions:
Heat oven to 350°. Lightly grease 8 or 9 ~ inch square pan. Melt margarine in medium skillet over medium ~ high heat. Add onions; cook and stir until tender. Stir in green chiles. Spoon chile mixture evenly into greased pan. Sprinkle with cheeses.
In small bowl, beat eggs slightly. Beat in sour cream and red pepper flakes. Spoon egg mixture evenly over cheeses. Sprinkle with tomato.
Bake at 350°, for 35 to 45 minutes or until knife inserted in center comes out clean.