Set oven temperature to 350°F. After that, position an oven rack in the middle of the oven; this will aid in more equal baking of the pie.
Using a food processor or stand mixer fitted with a paddle attachment, add the mashed sweet potato. Once the sweet potatoes are silky smooth and devoid of stringy fibers, pulse or beat them a few times and leave them aside.
Sweet potato puree, melted butter, brown sugar, nutmeg, cinnamon, ginger, cardamom, salt, cornmeal, eggs, evaporated milk, and vanilla essence should all be combined in a big basin. Blend all ingredients until well incorporated and silky.
Filling should be poured into the prepared pie pan and, if necessary, smoothed down with an offset spatula or spoon.
Bake for 55 to 60 minutes. After baking for 30 minutes, check the pie to see how the crust is doing. If it is becoming too brown, tent the pie dough with foil or pie crust shields. After baking, the pie's center should wiggle or wobble just a bit.
Place the pie on a wire rack to cool for at least two to three hours after baking. After that, wrap the pie in foil and put it in the fridge to cool fully before storing. Because it contains milk and eggs, this pie should always be kept refrigerated. Add whipped cream or meringue topping as a garnish, if preferred. Cut and present. Have fun!