Prepare a round 8" tart pan by lining it with parchment.
Place 18 of the dates in a medium bowl and cover with 1 cup of the water and set aside.
Place walnuts in food processor fitted with the s blade and blend into a fine meal.
Add in the remaining pitted dates and process until dates are blended with the walnuts and it resembles coarse meal and the mixture hold together when squeezed between your fingers.
Press date/nut mixture into prepared tart pan, cover with plastic wrap and freeze until ready to use.
Drain dates and place them in blender bowl, add the remaining 1 cup of warm water, cinnamon, nutmeg, vanilla and sea salt. Blend until smooth.
Transfer to a medium bowl.
Slice or cube apples, placing them into bowl with date caramel as you go, toss until evenly coated.
Remove crust from freezer and fill with apples.
Sprinkle pie with cinnamon.
Serve and enjoy!
Notes
Pie can be frozen for 6 weeks in an airtight container.