01 -
Pat dry the 3 1/2 lbs boneless beef chuck roast. Season generously with 1 tsp kosher salt and 1/2 tsp black pepper on all sides. This initial seasoning is crucial for a flavorful French Onion Pot Roast (Slow Cooker or Dutch Oven).
02 -
Heat 2 tbsp olive oil in a large Dutch oven or oven-safe pot over medium-high heat. Sear the seasoned beef for 3-4 minutes per side until deeply browned. Remove beef and set aside.
03 -
Add the 4 large yellow onions, thinly sliced, to the same pot. Cook over medium heat for 15-20 minutes, stirring occasionally, until softened and deeply caramelized. Add 4 cloves garlic, minced, and cook for 1 minute more.
04 -
Pour in 1 cup dry red wine to deglaze the pot, scraping up any browned bits. Stir in 1 1/2 cups low-sodium beef broth, 2 tbsp Worcestershire sauce, 1 tbsp balsamic vinegar, 2 sprigs fresh thyme, and 1 bay leaf. Bring to a gentle simmer.
05 -
Return the seared beef to the Dutch oven or transfer all contents to a slow cooker. Ensure the beef is mostly submerged in the braising liquid. Cook for 420 minutes (7 hours) until the beef is fork-tender. This slow cooking creates the ultimate French Onion Pot Roast (Slow Cooker or Dutch Oven).
06 -
Carefully remove the beef from the pot and shred it using two forks. Discard thyme sprigs and bay leaf. Return shredded beef to the rich onion gravy, stirring to combine. Serve hot, topped with 1 cup shredded Gruyère cheese and garnished with 2 tbsp fresh parsley.