Add a thin layer of pasta sauce to the bottom of a prepared casserole dish.
Arrange a layer of frozen cheese ravioli over the sauce.
Top the frozen ravioli with half of the remaining sauce and half of the mozzarella and parmesan cheese.
Repeat the layers again, starting with the frozen ravioli. Sprinkle the top layer with Parmesan cheese.
Bake the casserole for 55 minutes, or until the lasagna is hot and bubbly.
Sprinkle parsley over the top of the lasagna. Allow the lazy day lasagna to rest for 10 minutes before serving.
No need to thaw the cheese ravioli before adding it to the dish- you can cook this straight from frozen!