Whisk together flour, cocoa, and salt in a medium bowl
Using a stand-alone or handheld mixer, cream the oil (or butter) and sugar together. Once mixed completely, add aquafaba (egg) and vanilla.
Add flour mixture gradually at low speed while scraping down the sides.
Roll dough out to 1/4" thickness on cocoa/flour floured surface. Use cookie cutter or small container to cut 2" circles.
Place on parchment paper lined sheet and freeze for 5 minutes.
Bake in oven for 7 minutes and allow to cool completely.
Cream Filling
Add nuts, 1/4 coconut milk, vanilla, sugar and salt to food processor or high speed blender to create cream. Add more milk 1 tbsp at a time until creamy texture is achieved. Be cautious with adding too much though because the cream will be too runny!