3cupsall-purpose flourplus more for rolling (freeze your flour ahead of time to help keep your dough extra cold when mixing it)
10tablespoons(1 ¼ sticks) unsalted butter, cut into small cubes and chilled
½cup plus 2 tablespoonsvegetable shorteningchilled
Up to 1 cup ice water
¾cupsugarplus more for sprinkling
1teaspoonground cinnamonplus more for sprinkling
8medium apples (about 3 ½ pounds), peeled, cored and cut into ¼-inch slices
To make the dough: In a large bowl, stir together the flour and salt. Add the butter and toss to coat with the flour, then flatten the bits of butter between your fingertips. Add the vegetable shortening, toss to coat with the flour mixture, and then flatten into pieces a little bigger than the butter. (Using just the tips of your fingers helps produce a flaky crust.)
Sprinkle ¾ cup of the ice water over the flour mixture and gently toss to incorporate. Use a rubber spatula to push the dry flour into the liquid, but do not stir the mixture. This gentle process of “hydrating” the flour without stirring makes all the difference. If the mixture is too dry and won’t come together when you gently squeeze a handful, sprinkle with another tablespoon of water and toss again. Continue the process until the dough just holds together, adding as little water and handling the dough as little as possible. Some dry patches and crumbs are okay—they will moisten as the dough rests.
Divide the dough into 2 balls, flatten into disks, and wrap well in plastic. Refrigerate for at least 2 hours, or overnight. The dough can be frozen for up to a month; thaw overnight in the refrigerator.
Preheat the oven to 400°F, with a rack in the bottom position.
To make the filling: In a large bowl, whisk together the sugar, cornstarch, cinnamon and salt.
On a lightly floured surface, roll one disk of dough into a 13-inch circle, then fit it into a 9-inch pie dish. Roll the other disk into a 13-inch circle.
Add the apples to the sugar mixture and toss thoroughly. (We combine the apples with the sugar at the last minute so the mixture stays drier and doesn’t weigh down the dough.) Pour the apple mixture into the dish. We call for just the right amount of apples. Don’t be afraid if you see them piled high. Cover with the remaining dough circle, then trim the excess dough and crimp the edges.
Cut about a dozen slits all over the pie. Sprinkle liberally with sugar and cinnamon, and place on a baking sheet lined with aluminum foil. (This way you needn’t worry about any juices that may bubble over.) Bake until the crust is golden and the filling is bubbly, 65 to 75 minutes. Transfer the pie to a rack and serve warm, or at room temperature.