HEAT large skillet sprayed with cooking spray on medium-high heat. Add meat; stir-fry 5 min. or until lightly browned.
ADD stir-fry vegetables; stir-fry 5 min. or until heated through. Stir in dressing, soy sauce and garlic powder; cook on medium heat 2 min. or until heated through, stirring occasionally. Remove from heat.
STIR in broccoli slaw.