2 cups peeled, cooked, cubed sweet potatoes
1 1/4 cups sugar, divided plus a pinch
1/4 cup (1/2 stick) melted butter
2 eggs
1 tsp vanilla extract or 1 to 2 tbsp bourbon
1/4 tsp salt
1/4 tsp ground cinnamon
1/4 tsp ground ginger
1 cup milk
1 Basic 9" Pie Crust (unbaked)
3 egg whites
Cream the sweet potatoes with an electric mixer. This will produce a smooth, creamy pie with no lumps.
Preheat the oven to 350 degrees F.
Filling:
In a large bowl, combine the potatoes, 1 cup of the sugar, butter, eggs, vanilla, salt, and spices. Mix thoroughly. Add the milk, stirring until well combined.
Pour the mixture into the pie crust and bake for 40 to 50 minutes, or until a knife inserted into the center comes our clean. Place the pie on a rack and cool to room temperature before covering with meringue.
Meringue:
Using an electric mixer, beat the egg whites until soft peaks form; beat in the remaining 1/4 cup sugar, 1 tablespoon at a time. Continue beating until the sugar dissolves and the mixture is glossy and stiff, but not dry. With a rubber spatula, spoon the meringue mixture on the pie, forming peaks. Make sure the meringue touches the crust all around.
Sprinkle with a pinch of sugar. Bake for 5 to 10 minutes, or until delicately browned. Cool and serve.