In a large skillet over medium-high heat, cook ground beef (or sausage) until no longer pink. Drain any fat.
Stir in the pasta and alfredo sauce, cooking until the sauce is hot.
Spread 1 cup of sauce mixture in the bottom of a 9 by 13-inch baking dish.
Layer half of the frozen ravioli in the bottom of the baking dish (no need to defrost). Spread half of the remaining sauce, followed by 1 cup of cheese. Top with a second layer of the remaining ravioli and meat sauce.
Cover and bake for 30 minutes. Uncover, top with remaining cheese, and bake for 15 to 20 minutes more until bubbly and heated through. Broil for 2 to 3 minutes to brown the cheese if desired.
Notes
Leftovers can be stored in an airtight container in the fridge for up to 4 days. Reheat in the oven or in the microwave until heated through.