Rinse pasta in warm water and allow to drain. DO NOT COOK the pasta. Only rinse it with a little warm water first.
Pour 1/2 jar sauce on bottom of slow cooker.
Add 1/2 pasta. DO NOT cook it ahead of time.
Add 1/2 meatballs.
Add 1/2 jar sauce on top of meatballs.
Add 1 cup cheese.
Add remaining pasta, then remaining meatballs.
Add remaining Sauce, then cheese.
Cook on low for 6 hours.