Preheat your oven to 275°F.
Heat the olive oil in a large pot or Dutch oven over medium-high heat.
Generously season the chuck roast with salt and pepper.
Place the roast in the pot and sear it on all sides until browned, about 4-5 minutes per side.
Remove the roast and set it aside on a plate.
Add sliced onions, chopped carrots, and quartered potatoes to the pot.
Cook for 3-4 minutes, stirring occasionally.
Return the roast to the pot.
Add beef broth, thyme, and bay leaves.
Bring to a low simmer.
Cover the pot with a lid and move it to the preheated oven.
Cook for 3-4 hours, or until the meat is tender and easily pulled apart with a fork.