Step 1: Sear the Beef. Begin by heating a large skillet over medium-high heat. Add a splash of oil and sear the beef chuck roast for about 3-4 minutes on each side until it develops a rich brown crust.

Step 2: Add to Crockpot. Transfer the browned beef to your Crockpot. Pour in the beef broth, followed by the Worcestershire sauce, minced garlic, and sliced onions.

Step 3: Slow Cook. Cover the Crockpot and set it to low for 8 hours, or high for 4-5 hours.

Step 4: Shred the Beef. Once cooked, carefully remove the beef from the Crockpot and shred it into bite-sized pieces before returning it to the flavorful juices.

Step 5: Toast the Rolls. Preheat your oven to 375°F (190°C). Cut the French rolls in half and toast them for about 5-7 minutes.

Step 6: Assemble the Sandwiches. Remove the toasted rolls and pile on shredded beef, then add the cheese and return to the oven for a few minutes to melt.

Step 7: Serve and Enjoy. Serve the sandwiches hot with a bowl of au jus for dipping.