Cook beef in a 2 quart measuring cup on High for 5 minutes, stirring once. Drain well. Stir in spaghetti sauce, water, and salt, blending well. Arrange 1/3 of the sauce in a glass or ceramic baking dish.Cover with half the noodles. Spread half of the ricotta cheese over the noodles. Sprinkle with 1/3 of the mozarella cheese. Repeat the once and top with the remaining sauce. Sprinkle with the Parmesan cheese.

Cover with double thick plastic wrap and cook on Medium for 35 minutes at 50% power.

Remove the wrap (carefully), sprinkle the top with the remaining 1/3 of the mozarella cheese and a little Parmesan cheese (optional). Cook 5 minutes at 50% power to melt the cheese. Enjoy!