Preheat the oven. Place all the filling ingredients in a blender and blend for around 2-3 minutes on full speed.
Wrap the crusts of the pie case in 2 layers of tin foil to prevent burning. Pour the filling and place on the hot baking sheet in the oven to bake.
Bake for 55 minutes. When baked, a knife inserted in the filling a few cm from the crust should come out clean but the centre should still be a little jiggly.
Allow to cool fully before slicing and serving with vegan whipped cream.