Creating delicious Slow Cooker French Dip Sandwiches is a simple process. Just follow these steps:

1. Prepare the Beef: Season the chuck roast with salt, pepper, garlic powder, and onion powder.
2. Sear the Roast: In a skillet over medium-high heat, sear the roast on all sides until browned (optional for added flavor).
3. Transfer to Slow Cooker: Place the seared roast in the slow cooker.
4. Add Liquid Ingredients: Pour in beef broth and add Worcestershire sauce, bay leaf, and thyme.
5. Cook: Cover and cook on low for 8 hours or high for 4 hours until the beef is tender and easily shredded.
6. Shred the Beef: Once cooked, remove the roast from the slow cooker and shred it using two forks.
7. Return to Broth: Place the shredded beef back into the slow cooker to soak up more flavor.
8. Prepare Rolls: Slice the hoagie rolls and place a slice of provolone cheese on each.
9. Melt Cheese: You may choose to toast the rolls in the oven briefly to melt the cheese.
10. Serve: Pile the shredded beef onto each roll and serve with a small bowl of au jus for dipping.

These steps will guide you in creating delightful sandwiches that will impress everyone at your table.