Make the roast: When ready to cook, set the Traeger temperature to 180℉ and preheat with the lid closed for 15 minutes. For optimal flavor, use Super Smoke if available.
In a small bowl, combine the garlic powder, onion powder, salt, and pepper. Rub the spice mixture all over the chuck roast.
Place the chuck roast directly on the grill grates. Close the lid and smoke for 1 ½ hours. Remove the roast from the grill and increase the temperature to 275℉.
Make the braise: Transfer the chuck roast to a large Dutch oven. Add the potatoes, carrots, onions, ancho chile powder, sherry, rosemary, thyme, chipotle peppers, and beef stock.
Place the lid on the Dutch oven and transfer to the grill. Close the lid and braise until the meat is very tender, 4-5 hours.
Serve with your favorite roasted vegetables or mashed potatoes and gravy. Enjoy!
