Start by chopping, dicing, and mincing your vegetables and herbs as listed.
Add olive oil into a pan over medium heat and add minced mushrooms and diced onion. Then cook for about 10 minutes.
Add garlic, salt, pepper, paprika, sage, and rosemary to the pan and cook for another 2 minutes.
Take the veggie and herb mixture out of the pan and let rest in a bowl while you work on your ground meat.
In the same pan, add the ground meat and brown until fully cooked. Then dump the veggie and herb mixture back into the pan and mix together with your spatula.
Turn off the heat and let the filling cool.
Crust
Start by mixing the flour, sugar, and salt in your medium sized bowl.
Add room temperature butter and work it into the flour with your fingers.
Then add cold water and knead the dough a few times.
Lightly flour a flat surface and divide the dough into fourths. Work each fourth at a time. Roll out the dough and cut into shapes of choice, in pairs of two (one for the bottom half of the pastry, and one for the top).
Crafting the Pastry
Preheat your oven to 375F.
Pack 2 tbsp of filling into the bottom of the crust. Then place the matching layer atop the filling and crimp the edges with a fork to secure the filling.
Score the top of each hand pie with your knife.
Grab your baking sheet and line with parchment paper. Place each pastry on the baking sheet.
In a small bowl, whisk your egg and 1 tbsp of water to make an egg wash. Brush each pie with the egg wash.