In a large skillet, brown ground beef; drain.
Add spaghetti sauce and tomatoes to the ground beef.
Layer one-third of meat mixture into 7x11-inch baking dish. Top with one-half the ravioli and then one-half of the cheese. Repeat layers. Top with remaining meat mixture.
Cover with foil and bake for 30 minutes.
Uncover and sprinkle with Parmesan cheese. Bake for 5-10 minutes more.