In a large skillet set over medium heat, add the ground beef. Cook it for approximately 5-7 minutes, using a wooden spoon to break it apart until browned.
Once the beef is browned, introduce the finely chopped onion and minced garlic to the skillet. Sauté until the onion becomes translucent, about 3-4 minutes.
Stir in the dried thyme, Worcestershire sauce, soy sauce, salt, and pepper. Mix thoroughly and simmer for an additional 2 minutes. Remove from heat and allow to cool.
While the meat mixture cools, roll out the sheets of puff pastry on a lightly floured surface. Use a 4-inch round cutter to cut out circles, creating around 10-12 circles from each sheet.
Place approximately 1 tablespoon of the beef mixture into the center of each pastry circle.
Fold the pastry over to form a half-moon shape, press the edges together to seal, and use a fork to crimp the edges.
Brush the tops of the hand pies with the beaten egg for a shiny finish.
Arrange the hand pies on a baking sheet lined with parchment paper and bake for 20-25 minutes, or until golden brown.
Once baked, let them cool for a few minutes and sprinkle with chopped parsley before serving.
Notes
Serve the hand pies warm on a rustic wooden platter with a small bowl of dipping sauce.