Preheat oven to 425. F. Wash and dry the sweet potatoes and pierce them all over with a fork.
Place them on a baking sheet and bake for 60 minutes or until fork-tender.
Let the sweet potatoes cool, and then cut them in half length-wise.
Scoop the sweet potato flesh out into a large food processor or blender.
To the food processor, add the room temperature butter and evaporated milk.
Pulse the food processor until the sweet potatoes are smooth.
To the food processor, add the vanilla extract, cinnamon, nutmeg, cloves, cardamom and salt. Pulse until combined.
Lastly, add the eggs, all purpose flour, brown sugar and white sugar to the food processor and pulse until the sweet potato mixture is smooth.
Prehead the oven to 350 F
Pour the batter into your prepared and parbaked crust
Bake for 50-60 minutes. The edges should be set and the middle should be only slightly jiggly.
Remove from oven and place on a cooling rack. Let the pie cool for 1 hour.
Cover with foil and refrigerate for 3 hours or overnight.