Preheat oven to 350 degrees F (180 degrees C).
Season all sides of the chuck roast generously with salt and pepper. It's a large piece of meat, so it can handle 2 tablespoons of salt.
1 boneless chuck roast, 2 tablespoon kosher salt, 2 tablespoon freshly ground black pepper
In a large dutch oven or oven-safe braiser pot on your range over medium-high heat, add your high heat oil and wait until the oil is shimmering hot (that means it looks like it's doing a little shimmy in the pot, it's moving a little) then add the seasoned chuck roast.
1 tablespoon vegetable oil, 1 boneless chuck roast
Sear the chuck roast on each side until it gets a deep brown crust, about 3 minutes per side. Remove the chuck roast from the pan and set it aside onto a plate.
Turn the temperature down to medium, then add the chopped carrots and sliced celery and onions to the pot. Sauté the vegetables for five minutes, stirring with a wooden spoon, until the vegetables start to turn golden brown. Add the garlic and thyme and cook for about two minutes.
3 stalks celery, 2 large carrots, 1 medium yellow onion, 6 cloves garlic, 3 sprigs fresh thyme
Place the chuck roast back into the pot, add in the potatoes and beef broth, and put a lid on your pot (you can also use aluminum foil if you don't have a lid).
2 pounds baby gold potatoes, 2 cups beef broth or stock
Cook pot roast for three to four hours, checking at three hours for fork-tenderness. Once fork tender, take the roast out of the oven.
Let the pot roast rest for 10 minutes before serving. Serve with vegetables and pan drippings or pan dripping gravy.