While sweet potatoes cool, reduce oven temperature to 350°F (177°C).
To a large mixing bowl, add the measured 2 cups of sweet potato mash and butter, and using an electric mixer beat on medium until everything is combined and there are no lumps.
Add the sweetened condensed milk (1 can), orange zest (1 teaspoon), ground cinnamon (1 teaspoon), ground nutmeg (1/2 teaspoon), ground ginger (1/4 teaspoon), ground cloves (1/8 teaspoon), salt (1/4 teaspoon), vanilla extract (1 teaspoon), and eggs (2) and continue to beat on medium until evenly combined.
Place the pie crust (with pie shield) on a rimmed baking sheet and pour filling into the prepared 9-inch deep dish pie crust.
Bake in the preheated oven, on the middle shelf, for 40 to 45 minutes, or until the crust is golden brown and the center of the pie has set. Remove the pie shield from the edges 15-20 minutes before the pie is finished baking.
Cool the pie on a wire baking rack and allow it to cool completely. Garnish with whipped cream or any of the above (See Tips) mentioned options.