If you are using my homemade recipe for vegan whipped cream, read the entire recipe post and prepare that recipe the day before for best results
Prepare the crust by crushing the cookies in a food processor or by hand to fine crumbs
Add the melted vegan butter and combine until it resembles wet sand
Press the crust mixture into the bottom & sides of your tart molds or pie shell
Freeze while you prepare the custard
For the custard combine the water with the cornstarch & whisk smooth
Next combine all the ingredients including the cornstarch slurry, (but not the vegan butter) together in a medium sauce pot and bring to a boil while whisking constantly be careful that the bottom does not scorch by adjusting the heat throughout
Once the custard boils and is visibly getting thicker, add the vegan butter and whisk smooth
Remove from the heat and pour the custard into your prepared crusts
Refrigerate until set then top with vegan whipped cream