Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 9 or 10 inch pie pan.

In a large bowl, combine sugar and baking (biscuit) mix. Stir in butter, milk and eggs. Then beat in pumpkin, spice and vanilla to mixture until smooth. Pour into pie pan.

Bake in preheated oven for 50 to 55 minutes, or until knife inserted in center comes out clean. Refrigerate any remaining pie.

Notes: Using a blender to mix this produces a smoother pie. Mixing by hand produces a more cake-like pie. Using an electric mixer is somewhere in between.