Let’s dive into the fun part—cooking! Remember, the kitchen is your canvas, and this dish is all about enjoying the process.

1. Heat the olive oil in a large skillet over medium heat. Add the sliced onions and cook, stirring occasionally, until they are deeply caramelized and golden brown, about 20-25 minutes. This step is where the magic happens, so take your time and let those onions develop their rich flavor.
2. Push the onions to one side of the skillet and add the ground beef. Cook until browned, breaking it up with a spoon, about 6-8 minutes.
3. Stir in the minced garlic, Worcestershire sauce, dried thyme, salt, and black pepper. Let the mixture cook for another minute until the garlic is fragrant.
4. Pour in the beef broth, stirring to combine all the ingredients. Allow the mixture to simmer until the liquid has reduced and the flavors have melded, about 10 minutes.
5. Preheat your broiler. Spoon the beef and onion mixture onto the bottom halves of the toasted buns. Top each with a slice of provolone cheese.
6. Place the assembled halves under the broiler until the cheese is melted and bubbly, about 2-3 minutes. Keep a close eye on them to prevent burning.
7. Cap with the remaining bun halves and serve warm. Enjoy the comforting embrace of flavors that transport you to a cozy family dinner.