Add the frozen meatballs, honey chipotle barbecue sauce, salted butter and brown sugar to your slow cooker.
Cook on low for 4-5 hours or until the meatballs are hot and the sauce has soaked into the meatballs.
Stir about 3 times during cooking to mix the sauce ingredients.
Video
Notes
This may seem like a long cooking time, but trust me here. If you let these meatballs slowly cook, they will taste more like the sauce, and they taste much better hot than just warmed up.If your meatballs are thawed, you can cut the cooking time down a bit.The sugary sauce can scorch if left to cook too long without stirring, so keep an eye on it toward the end of the cooking time.