Preheat the oven to 350°F (177°C).
Heat the olive oil in a braising pan or Dutch oven over medium heat. While the oil heats, season each piece of the chuck roast with salt, pepper, and garlic powder. Sear two pieces at a time for 2–3 minutes per side, or until deeply browned. Transfer the seared meat to a plate or bowl.
2 tbsps (30 ml) olive oil, 2½ lbs (1.13 kg) chuck roast, 2 tsps (10 g) kosher salt, 1 tsp (3 g) coarsely ground pepper, ½ tsp (2 g) garlic powder
Reduce the heat to medium and add the onion, carrots, and celery. Sauté for 5–6 minutes, or until the onion is softened. Add the garlic and tomato paste and cook for 2–3 minutes, stirring occasionally, until the paste darkens and the garlic is fragrant.
1 medium yellow onion, 2 medium carrots, 1 rib of celery , 5 cloves garlic, 3 tbsps (48 g) tomato paste
Deglaze the pan with the beef broth, scraping up the fond from the bottom. Stir in the crushed tomatoes, diced tomatoes, balsamic vinegar, brown sugar, oregano, basil, red pepper flakes, and thyme sprigs. Return the seared meat to the pan, ensuring it is submerged in the sauce. Cover with a lid and transfer the pan to the oven. Braise for 2½–3 hours, or until the beef is tender and shreds easily.
1⅓ cups (315 ml) low-sodium beef broth, 1 can (28 oz / 794 g) crushed tomatoes, 1 can (14 oz / 397 g) diced tomatoes, 3 tbsps (45 ml) balsamic vinegar, 1 tsp (4 g) light brown sugar, 1 tsp (1 g) dried oregano leaves, 1 tsp (1 g) dried basil leaves, ¼ tsp (0.5 g) red pepper flakes, 3 sprigs fresh thyme
Remove the pan from the oven and let the ragù rest for 20–30 minutes.
During the final minutes of resting, cook the pappardelle in a salted pot of boiling water according to package directions. Reserve 1/2 cup (120 ml) of the pasta water. Discard the thyme bundle, transfer the beef to a plate, and shred it with two forks. Return the shredded meat to the sauce. Add the cooked pasta and toss with tongs until coated, using the reserved pasta water as needed to loosen the sauce.
16 oz (454 g) pappardelle
Serve warm with parsley, parmesan, and crusty bread, if desired.
parsley, freshly grated Parmesan