-
1
Stir the butter, oil, sugar, and salt together in a medium bowl until evenly combined.
-
2
Add the measured flour and stir until a soft dough forms.
-
3
Sprinkle the dough in small clumps over the bottom of a 9-1/2-inch deep-dish pie plate.
-
4
Using a measuring cup or your fingers, evenly press the dough into the bottom and up the sides of the plate (flour the cup or your fingers occasionally to prevent sticking).
-
5
Cover with plastic wrap and chill in the refrigerator for at least 30 minutes.
-
6
Meanwhile, prepare the filling.
-
7
Heat the oven to 350 degrees F and arrange a rack in the lower third.
-
8
Place a baking sheet on the rack while the oven is heating.
-
9
Place all of the ingredients in a large bowl and whisk until smooth and combined.
-
10
Pour into the chilled pie crust.
-
11
Place the pie on the hot baking sheet and bake until the top starts to brown and the filling is set but still jiggles slightly in the center, about 50 minutes to 1 hour.
-
12
Remove from the oven to a wire rack and let cool completely, about 2 hours.
-
13
When ready to serve, chill the clean bowl of a stand mixer and the whisk attachment in the freezer for 10 minutes.
-
14
Place the cream, sugar, and brandy or rum (if using) in the bowl and whisk on high speed until medium peaks form, about 1 to 2 minutes.
-
15
(Alternatively, you can use a hand whisk and a large chilled bowl.
-
16
Whisk all of the measured ingredients until medium peaks form, about 3 to 4 minutes.)
-
17
Spread or decoratively pipe the whipped cream evenly over the pie and grate a light dusting of nutmeg over top.
