Season the beef short ribs generously on all sides with sea salt and black pepper.
Heat the olive oil in a heavy-bottomed Dutch oven over medium-high heat.
Sear the short ribs until a deep golden-brown crust forms on all sides, then remove the meat and set aside.
Reduce the heat to medium and add the diced onions, carrots, and parsnips to the pot, sautéing for 5 minutes.
Stir in the minced garlic and tomato paste, cooking for 1 minute until the paste turns a deep brick red.
Pour in the beef broth, scraping the bottom of the pot to release the flavorful browned bits.
Return the short ribs to the pot and tuck in the fresh thyme and rosemary sprigs.
Cover with a tight-fitting lid and simmer on low heat for 2 to 2.5 hours until the beef is completely tender and pulls away from the bone easily.
Discard the herb stems and serve the ribs hot with the braised root vegetables and a drizzle of the cooking liquid.