Preheat oven 350. Lightly coat a 2 quart baking dish with cooking spray. Spread 1/3 cup pasta sauce into prepared dish. Top with lasagna noodles. Combine rocotta cheese and mozarella cheese.sprinkle with parmesan cheese. Top with half of the spinach and ground beef. Pour pasta sauce over ground beef.
Top with lasagna noodles, the remaining cheese mixture, and the remaining spinach.Add the last noodles. Spoon the remaining pasta sauce over the noodles. Sprinkle with the remaining cheese and parmesan cheese.
Lightly coat a sheet of foil with cooking spray. Cover lasagna with foul, coated side down. Bake in the preheated oven for 50 minutes. Let stand for 20 mintues before serving. Enjoy!