Soooooo good!!! Easiest appetizer to throw together! Crockpot party meatballs 1 (32 oz.) bag frozen meatballs, 1 (18 oz.) jar grape jelly, 1 (18 oz.) bottle of your favorite BBQ Sauce Pour the meatballs, grape jelly and BBQ sauce into your slow cooker and stir well until combined. Cook on low for 6-8 hours or on high for 2 – 2 ½ hours until completely cooked through (stir occasionally).