Pat the beef chuck dry and season with sea salt and black pepper.
Heat the olive oil in a heavy-bottomed pot or Dutch oven over medium-high heat.
Sear the beef until browned on all sides, then remove and set aside.
In the same pot, add the pearl onions, carrots, parsnips, and mushrooms, sautéing until the vegetables begin to soften.
Stir in the minced garlic and tomato paste, cooking for 1 minute until fragrant.
Pour in the red wine to deglaze the pan, scraping up any browned bits from the bottom.
Return the beef to the pot and add the beef broth, dried thyme, and bay leaf.
Bring to a boil, then reduce heat to low, cover, and simmer for 90 minutes or until the beef is fork-tender.
Remove the bay leaf before serving.