Form your ground beef patties to be a touch larger than the buns you're using and about a ½ inch thick
Hit each side of the burger with a dash of salt and pepper
Add a splash of Worcestershire sauce
Smoke the burgers for about an hour, or until the internal temp hits 125 with an instant-read thermometer.
Remove burgers from smoker and turn temp up to high (400+)
put burgers back in smoker and cook for 2-3 minutes per side, depending on how you like your burger cooked. 140 is medium, but the USDA recommends cooking all ground beef products to 165 degrees.
Let rest for 5 minutes and serve
Video
Notes
I like to use a burger press to keep the patty size uniform.