Preheat oven to 350.
Poke potato with fork and microwave until cooked through (mine took 6 minutes). Allow to cool some for easier peeling.
Put peeled potato, sugars, butter, and milk in blender. Cover and whirl until smooth.
Add eggs, spices, and extracts to blender. Whirl again.
Pour mixture into prepared pie dough. Bake 55 minutes.
Serve warm. Fresh whipped cream, slightly sweetened would be perfect on the side.