Preheat oven to 350 degrees.
Sprinkle chicken with salt and pepper and place in a lightly oiled baking dish; add mushrooms, and green onion.
In a medium bowl, whisk together next 6 ingredients (coconut milk through garlic); pour mixture over chicken and vegetables and bake for 30 to 45 minutes or until chicken juices run clear.
Top with chopped cilantro and serve immediately.