Directions for making the Nigerian Meat pie filling
Add the oil to a pan over medium heat. Add onions, and cook until translucent. About 3 minutes.
Add the ground beef and cook until it's well browned. About 5 minutes.
Season with curry powder, thyme, bouillon powder (or cube), red chili flakes for heat, and salt. Mix well.
Stir in the carrots and potatoes. Add water and cook until tender. About 20 minutes.
In a separate bowl, mix the flour and water until smooth and stir the mixture with the filling (this will thicken the filling).
Remove from heat and allow to cool.
Directions for making the Meat Pie pastry
Combine the flour, baking powder, nutmeg, salt, and sugar, in a bowl. Mix well
Add the margarine and butter (or just margarine if preferred) to the flour. Using your fingers, gently rub them together until the mixture resembles breadcrumbs. Then, gradually add cold water, a little at a time, mixing until a firm dough forms.
Transfer the dough to a work surface and knead it gently for about 1 minute. Then, return it to the bowl, cover with plastic wrap, and refrigerate for 30 minutes to let it rest. If you prefer a softer, less flaky pie, you can skip the refrigeration step.
Let's put them together
Preheat the oven to 350°F (180°C) and line a baking sheet with parchment paper.
Divide the dough into four parts. Roll out each cut-out dough to about ¼ of an inch thick, then use a 5-inch round pastry cutter to cut circles from the dough. Combine scraps, roll out, and cut again.
Spoon about 2 tablespoons of the beef mixture into the center of each pie crust circle. Don't overfill so you can easily close the Pie.
Fold the dough over and use a fork to seal the dough all along the curved edge. You can also use a pie cutter for this. Use a fork to create a couple of vents on the Pie (this will help prevent air pockets in your pie).
Crack an egg in a small bowl, add 1 tablespoon of water and whisk together then use a pastry brush to brush the edges of the Pie.
Arrange the pies in a single layer on the parchment paper-lined tray.
Bake at 350°F for 20 to 30 minutes or till golden brown.
Some people like their meat pie spicy, so feel free to add any hot pepper of your choice to your filling.
If you prefer a pastry pie that is fried as most people ask me, I'll suggest you go for the Nigerian Fish Roll
I used a combination of Margarine and Butter for this recipe in order to achieve a richer and a little more flakier Meat pie but you can use only Margarine if you choose to, it works very well.
It's not advisable to use only Butter for the Nigerian Meat pie, it will be way too flaky.
Watch out for your oven temperature. The time on this recipe is what works in my own oven, however, keep an eye on your pies to avoid underbaking or overbaking the pies.