See below for directions on how to cook sweet potatoes.
Preheat the oven to 350F.
Place the cooked sweet potatoes in a blender along with the remaining filling ingredients and blend until smooth. Pour this filling into either a homemade pie crust or a store-bought crust.
Bake the pie for 60 minutes, checking on it periodically to make sure the crust isn’t getting too brown (if it looks brown, cover it with foil and continue to bake).
Remove the pie from the oven. The filling should look mostly set but it’s okay if the center is a bit jiggly as the pie will continue to cook and set as it cools.
Allow the pie to cool for a couple hours then serve with whipped cream. If making the pie in advance, loosely cover and keep in the fridge for 3-4 days or tightly cover and keep in the freezer for up to two months.