Ravioli Lasagna is a brilliant hearty comfort food dinner to make on busy nights. Just four ingredients, and you have the easiest and best lasagna! It’s a great make ahead dinner too. And, spoiler alert: you do NOT need to precook the ravioli for this!
1 (25 ounce) package frozen ravioli
3 ½ cups Ragu sauce from 2 (24 ounce) jars, or more or less to taste
1 ½ cups shredded mozzarella cheese
¼ cup finely shredded Parmesan cheese