Ziti is a tubular pasta, sized somewhere between penne and rigatoni.
If you really want to do it right, make your own sauce, and add Italian sausage, but this is a quick recipe that is bachelor friendly.
1/2 package (8 oz.) Ziti
1 jar Newman's Own Italian Sausage and Peppers sauce
2 cups grated Mozzarella cheese (some parmesean too if you like)
Parsley
Preheat oven 350 degrees
Boil ziti ten minutes and drain
In a large bowl, combine ziti, jar of sauce, and 1 cup cheese, mixing well.
Spread mixture into lightly greased 2 1/2 qt. baking dish.
Cover and bake 35 min or until hot and bubbly.
Uncover, top with remaining cup of cheese, and parsley.
Return to oven ten minutes until cheese melts.
This will serve more than it looks like.. at least four heavy servings, maybe more like 8. As with any reheated pasta, add a little water if you are going to reheat in the microwave.