16 oz. package frozen ravioli, cooked.
1 pound ground beef, cooked
1 jar spaghetti sauce
2 c. shredded Mozzarella cheese

Add browned beef to spaghetti sauce. In an 11x7 pan, spread 3/4 c. meat sauce. Then layer in the following order:
1/2 of the ravioli
1/2 remaining meat sauce
1/2 cheese
rest of ravioli
rest of meat sauce

Cover with aluminum foil and bake in a 425°F oven for 30-35 minutes (or 350°F oven for 45 minutes). Remove foil and discard; layer rest of Mozzarella over ravioli. Return to oven until cheese is melted.

I double this recipe and use a 9x13 dish