Beef with Ravioli and Cheese - yield 4 servings

9 oz pkg refrigerated cheese Ravioli
1 lb lean ground beef
14 oz jar spaghetti sauce
9 oz pkg frozen spinach, thawed
4 oz shredded Mozzarella

Heat oven to 350 degrees. Cook ravioli to desired doneness as directed on package; drain.
Meanwhile, in large skillet, brown ground beef; drain, Stir in spaghetti sauce and spinach.
Spoon and spread half of beef mixture into ungreased 8-inch square (2 quart) baking dish. Arrange ravioli over beef layer. Spoon and spread remaining beef mixture over ravioli. Cover with foil.
Bake at 350 degrees for 20 minutes. Uncover baking dish; sprinkle with cheese. Bake, uncovered, and additional 5 to 10 minutes or until casserole is bubbly and cheese is melted.