This loaf can be made with any cooked mashed winter squash or sweet potatoes.
Preheat the oven to 350°F. Grease a 9 × 5-inch loaf pan.
Whisk together in a medium bowl:
Whisk together in a large bowl until smooth:
Add the flour mixture to the pumpkin mixture and stir just until smooth. If desired, fold in:
Pour into the prepared pan and spread evenly. If desired, for a crunchy, sparkling top crust, sprinkle with:
Bake until a toothpick inserted in the center comes out clean, about 1 hour. Let cool in the pan on a rack for 10 minutes, then turn out onto the rack to cool completely.