While the smoker is heating up, prepare the bratwurst by removing them from the packaging and patting them dry with a paper towel.
Once the smoker is preheated, place the apple wood chunks in the smoker to add smoke flavor.
Carefully place the bratwurst in the smoker, making sure to leave enough space between them for proper smoke circulation.
Close the lid of the smoker and let the bratwurst smoke for approximately 1 hour or until they reach an internal temperature of 155°F.
Halfway through the cooking time, flip the bratwurst to ensure even cooking on all sides.
Once the bratwurst reaches the desired internal temperature, remove them from the smoker and place them on a plate to rest for at least 5 minutes.
While the bratwurst are resting, toast the hotdog buns in a pan or on a grill.
Assemble by placing the bratwurst on the toasted buns and topping them with sauerkraut and mustard.
Serve immediately and enjoy!
Notes
You can also use a thermometer to check the internal temperature of the bratwurst. It is important to let the bratwurst rest for a few minutes after cooking to let the juices redistribute before serving.