Add artichokes, onion, seasonings, and broth to a large freezer bag.
Place shredded mozzarella cheese in a medium sized bag.
Seal both bags, removing excess air.
Staple together above the seal and freeze.
Dump large bag contents into a large stovetop pot.
Stir in pasta.
Cover and cook for 15-20 minutes, stirring every few minutes, keeping covered when not stirring.
When pasta is cooked, stir in the cheese and spinach and allow the spinach to wilt and cheese to melt before serving.