Cook onion and sausage in a large non-stick skillet over medium heat until the sausage is no longer pink.

Once the sausage is cooked, break it up and drain excess fat/moisture from the skillet.

Now add water, noodles, zucchini and spaghetti sauce. Stir well.

Bring the above mixture to a boil.

Then reduce heat. Simmer until noodles are tender. Stir occasionally.

In a bowl, combine parsley, parmesan cheese and ricotta cheese.

Add a couple of tablespoons of this mixture to the pasta mixture in the skillet.

Now sprinkle mozzarella cheese over the top and slowly simmer until cheese has melted.