Rub the chuck roast with olive oil, then very well season all sides. Press the seasoning into the meat. Set aside at room temperature for 20-30 minutes prior to cooking.

Preheat the Masterbuilt Gravity Series Grill to 225F.

In a bowl or jar, combine the apple cider and beef stock.

Place the seasoned chuck roast directly on the grilling racks. Spritz or lightly brush with the apple cider mixture, then let smoke for 3 hours. Every hour, you will want to spritz or brush more of the apple cider mix on the chuck roast.

In an oven-safe skillet, add the thinly sliced onions. Place the chuck roast on top of the onions and add the remaining apple cider mixture (at least 2 cups liquids).

Cover the skillet with foil and close the grill lid to smoke 3-4 more hours. The longer is smokes, the more tender the meat will be.

Let the meat rest for at least 15 minutes prior to shredded between two forks. Enjoy!