Combine water with spaghetti sauce in a bowl.

Cover the bottom of a greased 9"x13" baking dish with 1 1/2 cups of the mixture. Arrange a layer of uncooked noodles, slightly overlapping, on top of the sauce.

Spread half of the ricotta and half the mozzarella over noodles.

Sprinkle with 2 tablespoons parmesan cheese.

Add another layer of sauce.

Repeat with another layer of noodles, the remaining ricotta and mozzarella and 2 tablespoons parmesan cheese.

Top with a layer of noodles.

Pour remaining sauce over noodles; sprinkle with remaining parmesan cheese.

Cover and bake at 350 degrees F for 1 hour.

Let stand for 10 minutes before serving.