Product Recall: One SKU of Oscar Mayer Classic Wieners due to possible mislabeling. Click Here.
HEAT oven to 425ºF.
SPREAD onions onto bottom of 13x9-inch baking dish sprayed with cooking spray; top with chicken.
COMBINE tomatoes, dressing and garlic powder; pour over chicken. Sprinkle with cheese.
BAKE 30 min. or until chicken is done (165ºF).