Add meatballs, sloppy joe sauce, and pineapple to the bottom of the slow cooker. Toss ingredients so the sauce covers the meatballs.
Cook on HIGH for 2-3 hours. The meatballs should be cooked to 165ºF (74ºC).
Notes
Servings: Serving size is based on 6 meatballs per person.Storage: Store leftover Hawaiian meatballs in an airtight container in the refrigerator. Be sure to cover the container tightly to prevent air from getting in and drying out the meatballs. Reheat covered in the microwave until heated through.