Preheat the smoker to 350 degrees Fahrenheit.
In a bowl, mix together the ground beef, ketchup, brown sugar, mustard, Worcestershire sauce, garlic powder and salt and pepper until well combined.
Divide the mixture evenly among the buns and press down slightly.
Place on a baking sheet and bake for 20 minutes or until the burgers are cooked through.
Serve with your favorite toppings ( cheese, bacon, avocado, etc.)