Heat the olive oil in a Dutch oven or a large heavy-bottom pot over medium heat.
2 tablespoons olive oil
Add in the chuck roast and sear every side for about two minutes per side. Transfer the meat to a plate and set aside.
Add the butter, onion, and mushrooms to the pan and cook until the onions have softened.
2 tablespoons butter, 1 medium white or yellow onion, 8 ounces baby Bella mushrooms
Stir in the minced garlic and cook for an additional 30 seconds.
3 garlic cloves
Stir in the beef broth and fresh thyme.
3 cups beef broth, 3 springs fresh thyme
Place the meat back into the pot.
Cover the pot and place it in the oven.
Bake for 2 hours and 30 minutes, or until the beef is fork-tender.
Notes
Chuck roast: Chuck roast works well because the fat helps to keep the meat tender. You can use a round-eye roast if you would prefer. It is leaner and may dry out a little faster, though.
Baby Bella mushrooms: Shiitake mushrooms or button mushrooms are also good choices.
Garlic: you can use 2 tablespoons of jar minced garlic in a pinch.
Beef broth: beef stock or bullion and water will also work. I like to use reduced-sodium beef broth to better control the salt level.
Thyme: A similar herb, like rosemary, will also work.