Preheat oven to 175°C (350°F) and grease a 9-inch springform pan.
Combine biscuit crumbs with melted vegan butter and press firmly into the base of the pan. Bake for 10 minutes and let cool.
Sauté diced apples with 2 tbsp coconut sugar and cinnamon in a skillet over medium heat for 8 minutes until softened.
Process soaked cashews, 400ml coconut cream, maple syrup, lemon juice, and vanilla in a high-speed blender until completely smooth.
In a bowl, combine oats, flour, and brown sugar, then cut in the cold vegan butter cubes until a crumbly texture forms.
Pour the cheesecake filling over the crust, distribute the sautéed apples evenly on top, and cover with the crumble mixture.
Bake for 50 minutes until the edges are set and the crumble is golden brown.
Prepare caramel by simmering 100ml coconut cream and 100g coconut sugar in a saucepan for 7 minutes until thickened, then stir in sea salt.
Cool the cheesecake at room temperature, refrigerate for 6 hours to set, and drizzle with salted caramel before serving.