Over medium high heat bring a pot of water to a boil. Add pasta and cook until al dente. Drain and set aside.

Meanwhile have your tomato sauce simmering in a second pot over medium low heat. Simmer approx. 10-15 minutes.

Add sliced sausage, cooking for 5 minutes to blend flavours. Remove from heat and mix in pasta, and half the mozzarella.

At this point you can either add the rest of the mozzarella, pour into a serving dish and serve as is with the parmesan sprinkled on top.

OR in a preheated oven (400F) pour mixture into a sprayed (Pam) baking dish, and top with remaining mozzarella & parmesan baking until bubbly and top is lightly browned. (10-15 minutes)