Put the pumpkin and all other ingredients in the blender and blend until smooth. Pour into the prepared pie shell. Don't over fill it, or it will just run over in the oven. Put extra pie filling into a small buttered baking dish and bake it to make pumpkin custard. Bake @ 350 F for 1 hour or until the pie is firm and a knife inserted in the center comes out clean. Allow to settle for about 20 minutes before serving.