How to Make It
Combine first 3 ingredients; stir well. Set aside.
Coat grill rack with cooking spray; place on grill over medium-hot coals (350° to 400°). Place yellow squash, zucchini, and onion on rack; grill, covered, 5 minutes on each side, basting occasionally with dressing mixture.
Cooking Light Low-Fat, Low-Calorie Quick and Easy Cookbook