Preheat oven to 375 degrees

Brown the ground beef and drain. 

Spray baking dish with cooking spray then spread a small layer of spaghetti sauce until the bottom of the dish is covered.

Sprinkle approximately 1/3 of the browned ground beef over the sauce. 

Next, arrange a single layer of frozen ravioli over the ground beef. 

Then top with shredded cheese, and repeat process beginning with spaghetti and ending with shredded cheese

Bake in preheated oven for 45 mins, covered. Then take the cover off and bake for an additional 10 mins.