Start by preheating the oven 375℉ and lining a baking sheet with parchment paper.
Wash, dry, and poke the sweet potatoes with a fork several times before placing on the baking sheet and baking for 1 hour, or until soft.
Cool the sweet potatoes until they are able to be handled, then remove the skin and add the sweet potato to a large bowl.
Add in the rest of the filling ingredients, the butter, milk, eggs, sugar, and spices, and beat with a handheld mixer until smooth. This may take 5 or more minutes to make it completely smooth, due to the sweet potatoes. Then set aside.
Shape the crust into the pie dish as you desire, then pour the sweet potato mixture into the crust.
Bake for 45-50 minutes, or until the pie does not jiggle when moved, or when a toothpick comes out of the center clean, or without wet pie filling attached.
Allow to cool before adding whipped cream on top, serving, and enjoying!
Notes
Store leftovers covered in the fridge for up to 4-5 days, without the whipped cream, for best results.