Prepare the pie crust through step 4 of the linked pie crust recipe.
After you prepare the pie dough, begin prepping the filling.
First, pit the cherries. Using a sharp knife, cut half of the cherries in half (two pieces), then remix them with the whole cherries. I like to do this but it is not necessary.
In a large sauce pan, stir together the pitted cherries, granulated sugar, cornstarch, salt, cinnamon, vanilla, and lemon juice until combined.
Place on the stove over medium heat and cover, stirring every 1-2 minutes or so for 10 minutes. The cherry juices will release and begin to bubble - by the end of the 10 minutes, the filling will have thickened.
Remove from the heat and transfer the mixture to a bowl to cool until you are ready to roll out your dough.
Once your dough is done chilling, prep the pie dough. Preheat your oven to 400F.
On a generously floured surface, roll one of the dough portions out into a big circle while leaving the other portion in the fridge. Roll the dough large enough so that it fits in your pie dish (I use a standard size pie dish for this).
Roll the dough over your rolling pin and unroll it centered over the pie dish with the edges draping over.
Pour the cooled filling into the pie dish, then spread the cold and cubed butter on top of the filling. Place the pie dish in the fridge while you roll out the second disc of dough.
Roll the top crust into a circle big enough so it reaches the edges of your pan. Use your rolling pin to unroll it on top of the filling with the edges draping over.
Working in a circle, trim the edges of the top and bottom pie crusts if need be, then pinch them together. Crimp the edges of the pie dough using your fingers to give the pie that fluted look, if desired.
Place the pie in the freezer for five minutes so the fats become cold again. Remove from the freezer and use a sharp knife to make slits in the top crust. I normally do two slits (like a plus sign). These are vents so there is a place for the steam to release.
Lightly whisk an egg and use a pastry brush to apply an egg wash to the pie dough, then sprinkle with coarse sugar.
Bake for 20 minutes at 400F, then reduce the temperature to 375F and bake for an additional 35-45 minutes.
Remove the pie from the oven and let cool completely before slicing and serving. About 3-4 hours.