Preheat your oven to 350°F (175°C).
In a mixing bowl, combine the graham cracker crumbs, melted coconut oil, and sugar. Press the mixture into the bottom of a springform pan to form the crust.
Bake the crust for 10 minutes, then let it cool.
In a blender, combine the vegan ricotta cheese, coconut cream, sugar, lemon juice, cornstarch, lemon zest, and vanilla extract. Blend until smooth.
Pour the filling over the cooled crust and smooth the top.
Bake for 50 minutes, or until the center is set. Let the cheesecake cool to room temperature, then refrigerate for at least 4 hours before serving.