Smoking adds complex flavor but requires care because ground meat cooks faster than larger cuts. Use a low-temperature smoker (225–250°F / 107–121°C) and keep smoke light with a milder wood like apple or cherry to avoid overpowering the beef. Form slightly thicker patties (1 inch) and chill them before placing on the smoker.
Smoke until the internal temperature reaches about 135–140°F (57–60°C) if you plan to finish with a quick sear, or smoke to 150°F (66°C) and rest to reach 160°F (71°C) for fully cooked burgers. For deeper bark, finish briefly over high heat on a grill or skillet to sear the exterior without pushing the center too far past target temp.
With moderate smoke, careful temperature monitoring, and a final sear if needed, you can get deeply flavored smoked burgers that remain juicy and well-textured.