Sweet Potato Pie

Boil sweet potato whole in skin for 40 to 50 minutes, or until done. Run cold water over the sweet potato, and remove the skin.

Preheat oven to 180 C / Gas mark 4. Roll out pastry and line a 23cm (9 in) pie dish or tart tin.

Break apart sweet potato in a bowl. Add butter, and mix well with mixer. Stir in sugar, milk, eggs, nutmeg, cinnamon and vanilla. Beat on medium speed until mixture is smooth. Pour filling into prepared pastry base.

Bake in the preheated oven for 55 to 60 minutes, or until knife inserted in centre comes out clean. Pie will puff up like a souffle, and then will sink down as it cools.