In a bowl, mix together all ingredients except the pie shell.
Pour the sweet potato mixture into a pre-made, gluten-free pie shell. Place in the center rack and bake for 15 minutes. Then, reduce the temperature to 350 F and bake for an additional 35 - 40 minutes.
Remove from the oven and let the pie cool completely.
Transfer to the refrigerator to set up overnight. Serve chilled with dairy free whipped cream.