For the crust:
2 1/4 cups all-purpose flour, plus extra for dusting
1/2 cup pecans, toasted and finely ground
1 teaspoon kosher or sea salt
1 tablespoon granulated sugar
1/2 cup (1 stick) ice-cold unsalted butter, cut into small pieces
1/2 cup ice-cold solid vegetable shortening, cut into small pieces
1/3 cup sour cream
2 tablespoons ice water
For filling:
3 1/2 cups or 2 cans (15 ounces each) unsweetened pumpkin puree
7 large eggs, lightly beaten
2/3 cup unsulfured molasses
1/3 cup granulated sugar
1 tablespoon ground ginger
1 tablespoon ground cinnamon
1 teaspoon freshly grated nutmeg
1/2 teaspoon ground allspice
1/2 teaspoon kosher or sea salt
1/2 teaspoon freshly ground pepper
2 cups sour cream
1 cup heavy whipping cream
2 tablespoons milk
sugar for sprinkling
For topping:
1 cup heavy whipping cream
2 tablespoons confectioners' sugar
2 tablespoons dark rum or one tablespoon pure maple syrup

1. Make the crust: Combine the 2 1/4 cups flour, the pecans, salt, and granulated sugar in a food processor fitted with the metal blade. Scatter the butter and shortening pieces over the flour mixture and pulse until the mixture resembles coarse meal. Add the sour cream and water and process for a few seconds, just until the dough begins to form. Do not over process. (To make the dough by hand, place the dry ingredients in a large bowl, and use a pastry blender or 2 knives to cut the butter and shortening into the flour mixture. Add the sour cream and ice water, and mix just until the dough comes together and forms a mass.)
2. Transfer the dough to a floured work surface, gathering all the loose bits, and form into a disk about 1-inch thick. Cut the dough into 2 pieces, wrap each piece in plastic wrap, and refrigerate for at least 30 minutes, or up to overnight.
3. Have 2 9-inch pie pans ready. On a lightly floured work surface, roll out 1 piece of dough into a circle about 12 inches in diameter. Dust the work surface and dough with a little more flour, as necessary, to keep the dough from sticking. Roll the dough around the rolling pin, lift it over the pie pan, and unroll the dough over the pan. Adjust to center the dough, then press it into place, Trim the excess dough by running a knife around the edge of the pan. Repeat with the second piece of dough. Refrigerate the pie crusts while you make the filling.
4. To make the filling: in a large bowl, combine the pumpkin, egss, molasses, granulated sugar, ginger, cinnamon, nutmeg, allspice, salt, and pepper. Whisk until smooth. Blend in the sour cream and heavy cream. Whisk until smooth and no white streaks are visible. Set aside.
5. To assemble the pies, divide the pumpkin filling between the chilled pie shells. Use a pastry brush to brush milk on the edges of the pastry. Sprinkle with sugar.
6. Bake the pies for about 40 minutes until the filling just begins to puff at the edges and the center no longer jiggles when gently shaken. Turn off the oven and leave the pies, undisturbed, in the oven with the door ajar for 20 minutes. Transfer the pies to wire racks and let cool completely.
7. Meanwhile make the topping: In a medium bowl, combine the cream, confectioners' sugar, and rum. Using a whisk or electric mixer, whip the cream until soft peaks form. Cover and refrigerate until ready to serve.
8. Slice the pies into wedges, top with whipped cream and serve.

Makes two 9-inch pies.


Make ahead: The pie dough can be made, wrapped tightly, and frozen up to 3 weeks in advance. Thaw overnight in the refrigerator before rolling it out. The filling can be made up to 1 day in advance. Place in a covered container and refrigerate. The whipped cream can be prepared up to 4 hours in advance. Cover and refrigerate until ready to serve. The pie is best when baked the day you are planning to serve it.