1Unbaked 9-inch pie crust
3 medium-sizedSweet potatoes
¼ cupUnsalted butter, softened
½ cupGranulated sugar
½ cupPacked light brown sugar
2Large eggs, lightly beaten
¼ cupEvaporated milk
1 teaspoonPure vanilla extract
½ teaspoonGround cinnamon
½ teaspoonGround nutmeg
¼ teaspoonGround ginger
¼ teaspoonSalt
2 cupsMini marshmallows