Creating savory hand pies can be a delightful process if you follow these straightforward steps:

1. Prepare the Dough: In a large bowl, mix the all-purpose flour and salt together. Add the cubed butter and blend until the mixture resembles coarse crumbs. Gradually add cold water, 1 tablespoon at a time, mixing until the dough forms.

2. Chill the Dough: Wrap the dough in plastic wrap and refrigerate for about 30 minutes to help it firm up.

3. Make the Filling: In a large bowl, combine cooked meat, mixed vegetables, garlic powder, onion powder, and black pepper. Mix well and set aside.

4. Roll Out the Dough: After chilling, roll out the dough on a lightly floured surface to about 1/8-inch thickness. Use a round cutter or a glass to cut out circles approximately 5 inches in diameter.

5. Fill the Hand Pies: Place a tablespoon of filling in the center of each dough circle. Fold the dough over to create a half-moon shape and crimp the edges with a fork to seal.

6. Prepare for Baking: Preheat your oven to 400°F (200°C). Place the hand pies on a baking sheet lined with parchment paper. Beat the egg to create an egg wash, and brush it over the surface of each pie for a golden finish.

7. Bake: Bake for 25-30 minutes or until the pastry is golden brown. Remove from the oven and allow them to cool for a few minutes before serving.

By following these steps, you will create a batch of savory hand pies that could easily become the star of your next meal or gathering!