Step 1

Preheat oven to 350 degrees. Prepare a 9×13 inch baking dish with non-stick cooking spray.

Step 2

Cook ravioli according to package directions. Drain well.

Step 3

Meanwhile, in a large skillet, combine the cooked ground beef and marinara sauce. Bring to a boil over medium high heat. Reduce heat and simmer for 15 minutes.

Step 4

Ladle about 1 cup sauce into the bottom of the baking dish to create an even layer.

Step 5

Add a layer of ravioli, sauce, and mozzarella, topping with sauce and reserving a small amount of mozzarella.

Step 6

Cover with aluminum foil and bake for 20 minutes. Remove foil, sprinkle with remaining cheese, and return to oven. Bake for an additional 20 to 25 minutes or until cooked through and the cheese has melted.