Optional: ½ cup chopped nuts(such as walnuts or pecans)
Instructions
Preheat oven to 350°F. Grease and flour an 8 x 4-inch or 9 x 5-inch loaf pan. Set aside.
In a large mixing bowl, whisk together sugar, oil, and eggs. Add mashed sweet potatoes and vanilla extract; whisk to combine. Sprinkle baking soda and salt over top; stir until well blended.
Stir in flour, cinnamon, nutmeg, and cloves; be careful not to over-mix.
Fold in the nuts, if using.
Transfer batter to the prepared pan. Bake for 45-55 minutes for dark or nonstick pans or up to 60-70 minutes for glass, ceramic, or light pans. The bread is done when a toothpick inserted in the center comes out clean. Tent the loaf with foil during the final 15-20 minutes of baking if the top starts to get too dark.
Remove the bread from the pan and cool on a wire rack before slicing and serving.
Notes
Use roasted, mashed sweet potatoes for the best flavor and texture. The roasted potatoes aren't too wet, so they don't make the bread too dense or gummy.
To roast your own potatoes at home, preheat the oven to 425°F. Line a rimmed baking sheet with foil. Poke holes all over the outside of two medium sweet potatoes. Place on the foil-lined baking sheet and roast until tender, about 45-60 minutes. Cut a slit in the top of each potato to release steam. When cool enough to handle, scoop out the flesh and mash until smooth. Measure out 1 cup for this recipe, and use as instructed.
Do not over-mix the batter. It should come together so that everything is combined, but then stop stirring! Mixing too much will result in a dry, dense loaf.
The total baking time will vary depending on the type of loaf pan that you use. A dark metal, nonstick pan cooks the bread faster, so it will likely be done within 45-55 minutes. By contrast, a lighter metal pan, a glass pan, or a ceramic pan can easily require up to 70 minutes of baking in a 350°F oven. You can tell that your loaf is cooked through when you insert a toothpick or long stick deep into the center of the loaf and it comes out clean.