BBQ Meatballs are the easiest ever, portable game day snack!
In the bowl of the slow cooker, whisk together the ketchup, liquid smoke (or soy sauce) and brown sugar until well combined.
Stir in onions and meatballs until evenly coated.
Cover the slow cooker and set to high.
Cook for 2 hours until hot and bubbly.
Set the slow cooker to warm and serve hot.