Chicken & spinach pasta bake

Pasta and macaroni Italian cuisine

Baking

8 oz uncooked rigatoni 1 T olive oil 1 c chopped onion 1 (10 oz) pack frozen spinach, thawed 3 c cubed, cooked chicken breasts 1 (14 oz) can Italian-style diced tomatoes, undrained 1 (8 oz) container Philadelphia chive & onion cream cheese ½ t salt, ½ t pepper 1½ c shredded mozzarella cheese