Soak your cashews overnight or with the quick boil method by boiling the cashews in about 1 cup of water. Once it boils turn off the heat & let them soak for 30 minutes then drain & reserve
If you have acetate cake strips, I like to line the inside of my springform pan with it this will produce a much cleaner unmolding of the cake later
First prepare the crust by crushing the vegan cookies in a food processor to fine crumbs add the melted vegan butter & combine until it resembles wet sand.
Press this into the bottom of an un-greased springform pan & refrigerate until needed
Next prepare the lemon custard by whisking the sugar with the cornstarch in a small bowl, then add it to a medium sauce pot along with the water, lemon juice, zest & plant milk
Bring it up to a rolling boil whisking constantly to prevent scorching on the bottom
Once it boils fully add the lemon zest then pour 2 cups of the custard into a heatproof container & reserve in the refrigerator to set and cool for later~ this becomes the topping
The remaining custard in the pot should be 1 cup & will now get the sugar & agar & lemon juice listed from the cheesecake portion of the recipe
Return this to the stove & cook over medium heat until it boils once again, stirring constantly then take it off the heat & reserve at room temperature
Drain the cashews & place them into a high speed blender with the remaining cheesecake ingredients including the 1 cup of lemon custard that you just re-boiled (it does not have to be cooled)
Blend on high until the mixture is smooth
Pour into the prepared crust & freeze the cheesecake for at least 3 hours or overnight then unmold it from the pan and spread the remaining lemon custard over top