Preheat your oven to 325°F (163°C).
In a large Dutch oven, heat the olive oil over medium-high heat. Season the beef roast with salt and pepper, then sear it in the hot oil until browned on all sides, about 4-5 minutes per side. Remove the roast and set aside.
In the same pot, add the chopped onion, carrots, and celery. Sauté for about 5 minutes until the vegetables are softened. Add the minced garlic and cook for an additional minute.
Pour in the Barolo wine, scraping the bottom of the pot to deglaze and release any browned bits. Bring to a simmer and let it cook for about 5 minutes.
Stir in the diced tomatoes, beef broth, thyme, and rosemary. Return the beef roast to the pot, ensuring it is submerged in the liquid.
Cover the Dutch oven with a lid and transfer it to the preheated oven. Braise for 3 to 4 hours, or until the beef is fork-tender.
Once done, remove the pot from the oven and let it rest for 10-15 minutes before slicing. Serve with the sauce spooned over the top and garnish with fresh parsley.