Preheat the oven to 450'F. Crumble the ground beef into a large skillet over med-heat heat. Cook and stir until no longer pink. Drain grease, then stir in the spaghetti sauce and tomatoes.
Spread 1/3 of the sauce in the bottom of an 11x7 in. baking dish. Arrange 1/2 of the ravioli over the sauce. Sprinkle 1/2 of the mozzarella cheese and 1/2 of the Monterey Jack cheese over the ravioli. Repeat layers, ending with the last of the sauce on top. Cover with aluminum foil.
Bake for 30 min. in the preheated oven. Sprinkle parmesan cheese over the top before serving.