Place one stick of butter into the freezer.
½ Cup Unsalted Butter
Pierce the sweet potatoes with a fork and place on a baking sheet covered with foil. Bake in the oven at 350°F for about 1 hour.
1-½ Pounds Sweet Potatoes
Remove the foil and allow to cool, then peel the skin off the potatoes with your hands.
While the potatoes are baking, add the flour, salt and 1-½ teaspoons sugar into a mixing bowl. Take the frozen stick of butter and grate into the flour mixture, stirring with the flour every now and then so as to not have the butter stick to each other.
1-¼ Cup All Purpose Flour, ½ teaspoon Salt, ½ Cup Granulated Sugar, 2-¼ teaspoons Baking Powder
Once all the butter is grated into the flour add the 3 tablespoons of ice water then mix with your hands. Knead until a dough has formed. Make a flat disk and wrap with plastic wrap.
3 Tablespoons Iced Water
Place in the refrigerator to cool, for about 30 minutes.
Remove the dough from the refrigerator and roll out on a floured surface, making sure to flour the rolling pin and your hands. Drape over the 9" pie dish and flute the edges using your fingers and thumbs.
Place the pie crust into the freezer. Preheat your oven to 400°F.
Add the 5 tablespoons of softened butter to a large mixing bowl and add the remaining sugar and brown sugar. Beat for a few minutes until creamy.
½ Cup Unsalted Butter, ¼ Cup Light Brown Sugar, ½ Cup Granulated Sugar
Add the eggs, one by one and once fully incorporated add the cooled sweet potatoes, cream and spices. Beat on medium for a minute or two until completely mixed.
2 Each Large Eggs, 3 Tablespoons Heavy Whipping Cream, ½ teaspoon Vanilla Extract, 1 teaspoon Cinnamon, ½ teaspoon Nutmeg, ¼ teaspoon Allspice, ¼ teaspoon Ginger
Remove the pie crust from the freezer and quickly spoon the mixture into the pie crust. Smooth out with a spatula and pop straight into the preheated oven.
Bake at 400°F for 10 minutes then turn down the oven to 350°F for a further 45 minutes.
Remove the pie from the oven and allow to cool to room temperature before serving.
Pipe cream on the top to serve (optional).
Whipped Heavy Cream for serving