Prepare the Ingredients

1. Season the Roast: Rub the chuck roast with salt and pepper on all sides.
2. Sear the Roast: In a large skillet, heat olive oil over medium-high heat. Sear the roast on all sides until browned, about 2-3 minutes per side. Transfer to the slow cooker.
3. Add Aromatics: Add sliced onions and minced garlic to the skillet, sauté for 2-3 minutes until softened, then add them to the slow cooker.

Cook the Roast

1. Add Broth and Seasonings: Pour beef broth and Worcestershire sauce over the roast. Sprinkle thyme and rosemary on top.
2. Add Vegetables: Place carrots and potatoes around the roast in the slow cooker.
3. Slow Cook: Cover and cook on low for 8 hours or until the roast is tender and the vegetables are soft.

Serve the Roast

1. Shred or Slice: Shred the beef with forks or slice it to your preference.
2. Serve: Spoon the vegetables and some of the flavorful broth over the roast, and serve warm.