1Heat the oven to 350°F and arrange a rack in the middle. Coat a 9-by-5-by-3-inch loaf pan with butter and flour; tap out the excess.
2Combine the measured flour, salt, baking soda, baking powder, cinnamon, and nutmeg in a medium bowl and whisk to aerate and break up any lumps; set aside.
3In the bowl of a stand mixer fitted with a paddle attachment, mix the sweet potato flesh, granulated sugar, and brown sugar on medium speed until well combined, about 1 minute. Add the melted butter and mix on low speed until smooth. Add the eggs 1 at a time, mixing until fully incorporated, then mix in the vanilla.
4Stop the mixer and scrape down the sides of the bowl with a rubber spatula. On low speed add half of the reserved flour mixture, then 1/4 cup of the milk. Repeat with the remaining flour mixture and milk, mixing until just combined, about 1 minute. Remove the bowl from the mixer and fold in the nuts.
5Pour the batter into the prepared pan and bake until a cake tester inserted into the center comes out clean, about 55 to 60 minutes. Let the bread cool in the pan for 15 minutes, then turn it out onto a wire rack to cool completely. It will last covered for up to 5 days.
Sweet potatoes are absolutely marvelous—they’re incredibly versatile, naturally sweet, loaded with nutrients and fiber, and low in calories. Really, what’s not to love? Here, they're simply sliced and cooked to make the perfect crust for a quiche.
Sweet Potato Casserole
This is not your mother's sweet potato casserole (and that's a good thing). This version is only lightly sweetened, tender rather than gloppy or mushy, and accented with a hint of ginger. It's still topped with browned, gooey marshmallows, though, because some traditions are worth sticking to.