Pre-heat the pellet smoker to 180 degrees.
Rub each side of the chuck roast with Beef BBQ Rub.
Place the chuck roast directly on the smoker grates and close the lid.
Smoke at 180 degrees for about 1 1/2 hours.
Pull the roast out and set the temperature of the smoker to 225 degrees.
Then carefully cut the smoked roast into large chunks.
In a large Dutch Oven add the beef broth and flour and whisk until the flour has dissolved.
Then add in the green beans, corn, potatoes, onion, and salt and pepper.
Add the cubed meat and give everything a stir.
Place the entire Dutch Oven (LID OFF) into the smoker and let smoke for 2 hours, (stirring every half hour).
Then place the lid on the Dutch Oven and smoke for another 2 hours or until the potatoes are tender.
