Preheat oven to 180°c

In a large bowl combine prepared sweet potatoes, melted butter, sugar, evaporated milk, pumpkin pie spice, vanilla and salt.

Whisk until smooth (or use an electric mixer if preferred).

Pour into uncooked 9" pie crust and bake for 55-60 minutes or until set.

Cool to room temperature before serving.

Top with whipped cream.If the crust begins to brown too much, use a pie shield or cover with foil.