Brown ground beef in a large skillet; drain excess fat. Add the pasta sauce and simmer until warm.
Spread a thin layer of the pasta sauce on the bottom of a 9x13 casserole dish. Top with a layer of ravioli.
Add a second layer of the sauce and a second layer of ravioli. Add the remaining sauce on top of the second layer of ravioli. Sprinkle with shredded mozzarella cheese.
Bake the lasagna at 400° Fahrenheit for 25 minutes or until the cheese is golden-brown and bubbly. Serve and enjoy.