Making the Pie Dough/ Crust
In a medium mixing bowl, add flour, nutmeg, salt, and baking powder and mix.
Cut the butter into pieces and add them to the flour mixture. Cut the butter into the flour using a pastry blender until well mixed. You can also rub the butter into the flour with your fingertips until the mixture resembles coarse breadcrumbs with no large lumps of butter remaining.
Add the cold water to the mixture slowly and mix to form a dough. Flatten the dough into a disc, wrap it in a plastic bag or cling film and refrigerate for at least an hour.
Making theTurkey Filling
In a large pan, heat oil on medium heat, add chopped onion, carrot, and celery, and cook for 2 minutes or until vegetables are softened. Add garlic, herbs, salt, and pepper, and cook for about 1 minute. Stir in the corn flour mixed with the broth or stock. Let it simmer for about 3 minutes or until the filling thickens. Stir in the turkey and the thawed carrot and peas. Taste and correct seasoning to your preference. Take it off the heat and set it aside to cool completely.
Preheat oven to 350 F (180 C)
Rolling and Molding the Turkey Pie
Roll the cold pie dough on a floured board into 1/8- ¼th inch thick. Use your round cookie cutter or pie mold to cut into circles.
Re-roll any scraps and repeat the process until all the dough is used.
Add one tablespoon of filling to each circle, brush the edges with egg wash and fold and crimp edges to seal with the tip of a fork or the thongs.
Baking the Turkey Hand Pie
Transfer the hand pie onto a baking sheet lined with parchment paper or a silicone mat. Place them 2 inches apart.
Poke the top of the pie with a fork to create a hole to help the steam escape when baking. Brush the top with egg wash.
Bake in a preheated oven for about 30-35 minutes or until golden brown on top and under.
Serve the hand pie warm or allow it to cool down.