Soften the cashews by soaking them in boiling water for at least an hour or overnight.
Prepare the crust by blending cashews into a fine powder, then adding dates and 1/4 teaspoon salt until a dough forms.
Line a 9×9-inch pan with parchment paper and press the crust evenly into the bottom. Sprinkle the top with flakey sea salt.
Blend soaked cashews with coconut cream, maple syrup, lemon juice, and zest until smooth and creamy. Add melted coconut oil and blend again.
Pour the cheesecake filling over the crust, spread evenly, and garnish with lemon zest. Freeze for 1-2 hours until set.
Once firm, slice into squares, top with vegan whipped cream and lemon zest, and serve immediately or store in the freezer until ready to enjoy.