Preheat Oven to 300 Degrees F. Season beef roast with kosher salt, black pepper, and garlic powder.
Heat oil in a Dutch oven over medium-high heat. Sear roast on all sides until golden brown; remove.
Lower to medium heat, add butter, onions, and a pinch of salt. Cook until caramelized about 30 mins. Stir in garlic cloves. Cook for another minute.
Deglaze with red wine, scraping bottom of the pot. Reduce by half.
Return roast to pot, add beef broth covering ¾ of the roast, bay leaves, rosemary, and thyme.
Cover and braise in the preheated oven for 3-4 hours until fall-apart tender.
Remove Pot and Shred Roast with fork, then top with Gruyere cheese. Increase oven temp to 400 degrees F and Bake for another 20-30 mins until cheese melts.
Toast Baguette slices and serve alongside roast. Top with chives.