Preheat your smoker to 225 degrees F. We used apple wood chunks with lump charcoal on our Big Green Egg.
While the smoker is warming, prepare the meatballs by combining all ingredients (less the BBQ sauce and mozzarella cheese) and combine with your hands. Be gentle just mix enough so it's all together.
Prepare meatballs by rolling a little over a tablespoon in size and then using your thumb, press a small indent and place cheese in the fold. Then work the meatball again around the cheese so you have the meat surrounding the cheese. That's why we go with larger meatballs.
Place meatballs in the smoker until the internal temperature reaches 155 degrees (about 45 minutes) when checking the internal temperature of the meat. Then place the meatballs in a heat proof dish (or cast iron skillet) with the BBQ sauce and return to your smoker and close lid.
When the meatballs reach an internal temperature of 165 degrees (or about 15 more minutes) they are done. Serve warm!!!