Preheat your oven to 250 F.
Season the beef cubes to taste with sea salt and freshly ground black pepper.
3 lb. beef chuck, Sea salt and freshly ground black pepper
Melt some cooking fat in a Dutch oven or ovenproof pan over medium-high heat.
Cooking fat
Brown the beef cubes on all sides for 1 to 2 minutes, remove and set aside.
Cook the garlic and onion for 2 minutes or until fragrant.
3 garlic cloves, 1 onion
Add the beef stock and stir to scrape up all the brown bits from the bottom of the pan.
1 cup beef stock
Return the beef to the Dutch oven, cover it, and place it in the oven.
Cook the beef in the preheated oven for about 3 hours, keeping an eye on it for the final 30 minutes.
In a large bowl, combine all the ingredients for the roasted vegetables.
8 oz. carrots, 8 oz. mushrooms, 1 tsp. fresh thyme leaves, 1 tbsp. melted cooking fat, Sea salt and freshly ground black pepper
Place the vegetables on a roasting pan.
Roast the vegetables during the last 15 minutes of the beef cooking process.
Serve the meat cubes with the roasted vegetables.