Chicken Sausage, Mushroom and Pasta Casserole

spray(s) cooking spray

uncooked whole wheat pasta rotini suggested (about 3 cups)

olive oil extra-virgin

cup(s) panko breadcrumbs

grated Parmesan cheese Parmigiano-Reggiano suggested

dried oregano

cooked chicken sausage(s) Italian-variety, thinly sliced

medium yellow pepper(s) thinly sliced

medium uncooked onion(s) chopped

pound(s) fresh mushroom(s) sliced

water

cup(s) marinara sauce

cup(s) shredded part-skim mozzarella cheese