1.Coarsely Chop Pecans And Salt In A Food Processor. 2.Add Dates And Pulse Until Thoroughly Combined (15-20 Seconds). 3.Add Syrup And Pulse Just Until Combined (Mixture Should Just Barely Stick Together). 4.Press Nut Mixture Firmly And Evenly Into A 9" Pie Plate. Set Aside. 5.To Make Filling, Grind Nuts To A Coarse Paste In A Blender. 6.Add Water, Syrup And Vanilla Scrapings, And Blend Until Smooth, About 5 Minutes (Scraping Sides As Needed). Mixture Should Be The Consistency Of Thick Pancake Batter. 7.Set Aside 2 Tbs Coconut; Add Remainder To Blender, And Process To Combine. Pour Into Prepared Shell, Spreading Evenly. 8.Thinly Slice Bananas Crosswise And Arrange In Slightly Overlapping Rows, Beginning At Edge Of Tart. 9.Sprinkle With Reserved Coconut; Serve Immediately.