Refrigerate one can of full-fat coconut milk overnight and scoop the fat off of the top to measure 1 cup
Add coconut milk and honey/agave to a medium saucepan and heat over medium heat until smooth, about 1 minute.
Place the coconut milk fat into a small sauce pan and heat over medium heat until liquid. Add the palm sugar and whisk until combined. Boil mixture for about 15-20 minutes, whisking well every few minutes
Add nut butter, butter/oil, vanilla and salt, let bubble and continue to let cook for 2-3 minutes, stirring constantly until mixture thickens.5. Remove from heat and pour over prepared crust. Refrigerate or let cool to room temperature.