MIX batter ingredients in a pre-sprayed 9 1/2-inch deep dish pie plate. Combine chicken and barbecue sauce in a small bowl.
TOP batter evenly with chicken mixture. Using fingers or spoon, firmly push topping into batter. Sprinkle green onion and cheese over meat. Top with cilantro, if desired.
BAKE by placing in a COLD oven; set temperature to 350°F. Bake for 30 minutes or until done.
Recipe Note: If desired, batter may be mixed in a separate bowl. Proceed as directed above.