To make the crust: Place the walnuts and pecans, sea salt, and coconut in a food processor and grind roughly. Add the dates and process until the mixture is thoroughly broken down and sticks together when you squeeze a bit in the palm of your hand. Press mixture evenly onto the bottom and sides of a pie plate (alternately, you can press it into a 9" springform pan).
Drain the dates, reserving the soak liquid. Transfer the dates to a high speed blender or powerful food processor. Add the 1/2 cup pecans, coconut oil, vanilla, cinnamon, nutmeg, salt, and about 1/4 cup of the date-soaking water. Blend until the mixture is totally smooth.
Pour the filling into the crust. Smooth the top over with an inverted spatula. Place in the fridge for at least four hours to set. Decorate the top with the 3/4 cup pecans, and continue to chill till ready to serve.
Gena is a registered dietitian, recipe developer, and food blogger. She's the author of three cookbooks, including Power Plates (2017) and Food52 Vegan (2015). She enjoys cooking vegetables, making bread, and challenging herself with vegan baking projects.