1 (16 ounce) package uncooked rotini pasta
1 pound ground Italian sausage
1 (16 ounce) jar pasta sauce
2 (12 ounce) containers cottage cheese
1 (2.25 ounce) can sliced black olives
12 ounces shredded mozzarella cheese
2 (3 ounce) packages sliced pepperoni