Mix the flour in a bowl with matcha powder, sugar, salt, and.
Mix butter into the flour using your fingers until the mixture becomes crumbly.
Add some ice into the water, then mix the dough using it.
Add vanilla extract to the dough and then knead until smooth and soft.
Make two disks of similar size by cutting the dough into two equal portions.
Place them in the refrigerator for 60 minutes or, for the best outcomes, allow them to sit overnight.
Mix the peaches in vanilla, lemon juice, cinnamon, brown sugar, nutmeg, and cornstarch to make the filling.
Keep them in the refrigerator until they are soft and ready.
Roll one disc of dough up to 1/4 inch thick to assemble the dough.
Transfer it to a 9-inch pie dish. Cut the edges.
Use the peaches you have tossed to distribute the dough evenly.
Roll the dough disc using the same thickness, then cut the dough into pieces.
Create patterns you like using these strips, then fold the edges.
Break the egg, beat it, and then break it. Wash the pie using an egg, then cool it in the fridge for a few hours.
Preheat the oven and set the temperature to 375℉.
Bake the pie until it is golden. It could take 45-50 minutes to bake.
Allow it to sit for two hours to cool.
Serve with whipped cream or a spoonful of ice cream as you serve.