Instructions
Step 1
Position a rack in the center of the oven and preheat to 350°F. Line the bottom of a 9-inch springform pan with a round of parchment paper. (Alternatively, use a pie dish coated with sunflower oil or nonstick spray.)
Step 2
Make the crust: To a food processor, add the pecans, pine nuts, sugar, cinnamon, and salt and pulse until the mixture resembles small pebbles. Add the sunflower oil and pulse again until a rough dough forms. Transfer to the pan, firmly pressing the dough into an even layer along the bottom and sides of the pan. Place on a baking sheet and bake until the crust is golden-brown and fully set, 20–25 minutes. Transfer to a wire rack and set aside to cool.
Step 3
Meanwhile, make the filling: In a large bowl, whisk together the pumpkin purée, coconut milk, brown sugar, arrowroot powder, and pumpkin pie spice until well-combined and no lumps remain.
Step 4
Pour the pumpkin mixture into the baked crust and tap on the counter a few times to remove any air bubbles. Return to the oven and bake until the filling is fully set and browned, about 45 minutes. Transfer to a wire rack and set aside to cool to room temperature, then chill in the fridge for at least 2 hours, up to 24 hours.
Step 5
Make the coconut whipped cream: Open the coconut milk cans and, using a spoon, poke a hole through the solids on top. Set a fine sieve over a medium bowl and strain out the liquid, reserving any solids in the sieve. (Use the liquid within a few days, or freeze for later use. If the solids and liquid haven’t separated, scoop out and use the thickest part of the milk, usually about half the can, and save the rest for later use.) To a stand mixer fitted with the whisk attachment, or to a large bowl with a handheld mixer, transfer the coconut solids. Add the agave and vanilla and beat until stiff peaks form, 2–3 minutes, then beat in the cinnamon. Cover and refrigerate until ready to use.
Step 6
Cut the pie into slices, top each with a dollop of the whipped cream, and serve.