Prepare the pie crust according the recipe and press into a 9-inch pie plate. Place 1/3 of the apples and all the salt, cinnamon, dates, and vanilla powder in a food processor. Process the mixture until it is almost the consistency of applesauce. Continue adding apples, processing only until apples are chopped into small to medium sized pieces. Add raisins to the mixing bowl. Stir in ground flax seeds, mix well, and set aside for 15 minutes. The raisins and flax seeds will soak up the juice from the apples. Pour the apple mixture into the prepared pie crust.
Place almonds in a food processor and process until mixture resembles flour. Add salt and vanilla powder to the almonds and process well. Add pecans, walnuts, and dates to the food processor and process just until combined. Press the mixture into a 9-inch glass pie pan. The crust may be made ahead of time and refrigerated or frozen.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.