Chile Cheese Casserole

Name: Chile Cheese Casserole
Ingredients: Nonstick cooking spray; 4 cups baked tortilla chips, 2 1/2 ounces; 6 egg whites; 4 large eggs; 1/4 cup skim milk; 3/4 teaspoon ancho chili powder; 1/8 teaspoon freshly ground black pepper; 1 (4-ounce) can mild chopped green chiles; 1 tablespoon chopped fresh cilantro leaves, plus whole leaves for garnish; 1/2 cup shredded sharp Cheddar cheese, about 2 ounces; 1/2 cup shredded pepper jack cheese, about 2 ounces; 1/2 cup prepared green salsa verde; Reduced-fat sour cream, optional