Cube the butter and place in the freezer to chill while you prepare the other ingredients.
Place the water in a cup with ice to chill.
In a large mixing bowl, stir the flour and salt with a fork.
Add in the chilled butter and work with your hands to break up the pieces until uniform pieces of pea-sized butter remain.
Pour in the ice cold water (but not the ice) and stir with the fork until a loose dough forms.
Dump out onto a well floured counter and knead into a ball.
Re-flour the counter if necessary and roll the dough out into a roughly 10" rectangle.
Fold the dough into thirds (like an envelope) and rotate 90 degrees.
Roll the dough out into a 10" rectangle, and then fold in thirds again.
Repeat this process 5-6 times.
The last time you fold it up, wrap in cling wrap and allow to sit in the fridge for 30-45 minutes (you can also leave this in the fridge overnight) while you make the apple filling.
Apple Filling
Core and dice the apples.
Heat the honey in a large skillet over medium-low heat until simmering.
Add the apples, thyme, and butter.
Cook, stirring often, for about 10 minutes, or until the apples are slightly soft and caramelized looking.
Remove from heat and stir in the vanilla paste, ginger, and salt.
Allow to cool to room temperature.
Assembly
Preheat oven to 350 F.
Line a baking sheet with a silpat mat or parchment paper
Flour the counter and roll the dough out into a large rectangle.
Cut the edges of the dough off to form 4 straight edges.
Cut the dough into 12 equal squares.
In a small bowl, whisk the egg and 1 tsp milk together and brush one corner of each dough squash with it (so one corner and the two sides that form it).
Leaving as much juice behind as possible, spoon the apple filling into the center of each square of dough.
Fold the squares over to form a triangle (so the non-egg washed corner come to rest on top of the egg-washed corner.
Press seal with the tines of a fork.
Pierce the tops of each turnover with a sharp knife a few times to allow steam to leave and then brush with the remaining egg wash.
Bake for 18-20 minutes, or until golden brown.
Allow to cool on a wire rack.
Glaze
In a small bowl, whisk together the powdered sugar and milk until you get a thick icing you can drizzle on top of the cooled turnovers.
Enjoy!
Notes
Store in an air tight container in the fridge for up to 3 days.