Blend tofu, powdered sugar, oil, vanilla, and salt in a blender until smooth and creamy. Fold in 3 cups of the coconut. Pour into pie shells and bake for 15 minutes. Sprinkle the remanining half cup of coconut on top and bake for another 5 minutes until the filling looks firm and set. Serve chilled.
Note: I was told to toast the coconut ahead of time for a much better flavor.