1 recipe Basic Pie Dough (or your favorite pie crust for a single-crust 9-inch pie)
2 tablespoons all-purpose flour, plus more as needed
1 teaspoon ground cinnamon
1/2 teaspoon ground allspice
1/4 teaspoon baking powder
1/4 teaspoon ground cloves
1/4 teaspoon fine salt
2 cups baked, mashed sweet potatoes (from about 2 pounds of sweet potatoes)
2 large eggs, at room temperature
3/4 cup granulated sugar
1 cup sweetened condensed milk (about 1 [14-ounce] can)
2 tablespoons unsalted butter (1/4 stick), melted
1/4 teaspoon vanilla extract