Preheat oven to 375 degrees.
In a food processor, pulse together flour and salt.
Add butter, 1 Tablespoon at a time, pulsing after each addition.
Add water, 1 Tablespoons at a time, pulsing after each addition, until dough comes together.
Divide dough in half.
Wrap each half in plastic wrap, flatten into a disc, and refrigerate 15 minutes.
Roll out dough, one piece at a time.
Place one piece of dough into pie pan and gently press it to fit.
Add filling to crust.
Top with second crust.
Press edges together.
Trim excess dough.
Using a sharp knife, make slits in top of pie to allow steam to escape.
Brush top of pie with heavy cream and sprinkle with coarse sugar.
Place on a baking sheet and put in oven.
Bake for 90 minutes, until crust is golden brown.