1. Heat dressing in large skillet on medium heat. Add vegetables; cook and stir 2 min. or until crisp-tender. Stir in pasta sauce and crushed red pepper.
2. Spread 1/2 cup sauce mixture onto bottom of 9-inch-square baking dish sprayed with cooking spray; cover with layers of half each of the ravioli, remaining sauce mixture and cheese. Repeat layers; cover.