Saute onion, zucchini and garlic in large skillet until tender.
Add in marinara, diced tomatoes, seasonings, Parmesan cheese, and tortellini then mix well.
Cook covered 8-10 minutes or until center of tortellini is soft.
Remove from heat, remove lid, and sprinkle mozzarella cheese to cover.
Bake on 400* for 15 minutes or until cheese is a bit crispy.
Serve garnished with basil (optional) and Enjoy!