I love this casserole because you can use leftover chicken and brown rice. When combined with the fresh vegetables and salsa and topped with cheese, it’s a great weeknight meal.
Preheat the oven to 350°F (180°C). Spray a shallow 2-quart (2 L) baking dish with cooking spray.
Heat the oil in a nonstick skillet over medium heat. Add the mushrooms, chiles, scallions, and cilantro. Cook until the mushrooms have cooked through, 4 to