Preheat your oven to 350°F (175°C). In a bowl, mix graham cracker crumbs, sugar, and cinnamon. Stir in melted vegan butter until moistened. Press into a 9-inch springform pan and bake for 8-10 minutes. Let cool.
Blend silken tofu, sugar, vegan cream cheese, cornstarch, lemon juice, vanilla extract, and salt until smooth. Pour over the cooled crust.
In another bowl, combine diced apples, flour, oats, brown sugar, cinnamon, nutmeg, and salt. Cut in cold vegan butter until crumbly. Spread over the cheesecake filling.
Bake for 55-65 minutes until edges are set but center jiggles slightly. Cool in the oven with the door cracked for an hour before refrigerating for at least four hours or overnight.