This sweet potato pie is legendary and has been passed down from my grandfather and grandmother to my own mother and now to me. This is the MUST HAVE recipe of the fall season that can be enjoyed for Halloween, Thanksgiving, and any other day of the year!
Boil sweet potatoes until tender. Blend until until creamy. Pour into large mixing bowl. Mix in cinnamon (or allspice if using), sugar, and salt. Separate egg yolks from egg whites. In a small bowl beat egg yolks and add to sweet potato mixture along with milk and butter; stir until creamy. Mixture will be fairly thin. In another small bowl, whisk egg whites and fold in to sweet potato mixture being careful not to over mix. Bake at 400 F for 10 minutes. Lower temperature to 350 F and bake for 1 hour and 5 minutes. Pie should be mostly firm to the touch when removed from oven.
When initially blending the sweet potatoes you will want to use a high speed blender instead of a hand mixer. The initial blending will remove the sweet potato strings. By using a hand mixer you will not remove them, therefore the final result of your pie will not be as creamy as it could be. Also you can use regular milk, but will have better flavor and results if you use the evaporated milk.
Adapted from A family recipe from my Mom