To make the crust: In the bowl of a stand mixer fitted with the paddle attachment, add the flour and cane sugar. Turn the mixer on low for two to three rotations to combine the dry ingredients.
Remove the butter from the fridge and chop into small cubes. The smaller the cubes, the flakier the crust. Cut the stick of butter into four and then chop into small cubes from there. Add the cold, cubed butter to the flour mixture. Measure out the cold water and have it ready.
Turn the mixer on low and slowly start to incorporate the ingredients. Gradually turn the mixer to medium speed. Once the butter mixture looks like wet sand, immediately add in all the water. As soon as the dough comes together, stop the mixer. Do not over mix.
Divide the dough into two portions, one should be almost double the size of the other. I prefer to weigh them, the large one should weigh 312 grams and the small should weigh 170 grams. Form them both into disks and wrap separately in plastic wrap. Allow to cool in the fridge for at least 6 hours or overnight.
Preheat the oven to 350°F.
To make the filling: Add the caramel sauce and cornstarch to a medium bowl and mix together. Add the sliced apples and toss to coat completely. Set aside.
To make the topping: Add the heavy whipping cream into a small dish, set aside.
Grease a 9-inch pie pan well with butter. Remove the pie dough from the fridge. Remove the plastic wrap and place on a floured surface. First, roll out the large disk to ¼-inch thick, it should be about 11-inches in diameter. Place the pie dough into the pie pan, and press lightly to form against the pan. It should be large enough that the dough folds right over the top.
Roll out the smaller disk to ¼-inch thick, it should be about 9-inches in diameter. Set aside.
Add the filling into the pie pan and spread evenly.
Place the smaller pie dough on top, crimp and fold over the edges of the dough to seal the top and bottom together. Flute the edges.
Using a pastry brush, brush the dough with the cream topping. Sprinkle it with Turbinado sugar. Make 4 vent holes in the top of the pie.
Bake for 1 hour and 15 minutes, or until lightly browned. Turn up the oven to 400°F and bake for an additional 5 to 15 minutes or until golden brown to your liking.
Store at room temperature for up to 3 days.