Making Ground Beef French Dip Sandwiches is straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Beef: In a large skillet over medium heat, add the ground beef, chopped onion, and minced garlic. Cook until the beef is browned and the onions are soft, about 5-7 minutes.
3. Season: Stir in Worcestershire sauce, thyme, salt, and pepper. Mix well and cook for another 2 minutes.
4. Prepare Au Jus: In a small saucepan, heat the beef broth over medium heat until simmering. This will be used for dipping.
5. Assemble Sandwiches: Cut the hoagie rolls in half lengthwise. Spoon a generous amount of the beef mixture onto each roll. Top with two slices of provolone cheese.
6. Bake: Place the assembled sandwiches on a baking sheet and bake in the preheated oven for about 10 minutes or until the cheese is melted and bubbly.
7. Serve with Au Jus: Remove the sandwiches from the oven. Serve hot with the warm beef broth for dipping.
8. Garnish: Sprinkle with fresh parsley, if desired, for an extra touch.

These steps will guide you in creating these delicious sandwiches effortlessly.