01 -
Preheat the oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment paper for easy removal.
02 -
In a large mixing bowl, whisk together pumpkin purée, sourdough discard, eggs, vegetable oil or melted butter, light brown sugar, and vanilla extract until the mixture is smooth and homogeneous.
03 -
In a separate bowl, whisk together all-purpose flour, baking soda, baking powder, salt, ground cinnamon, nutmeg, and ground cloves until evenly blended.
04 -
Add the dry ingredients to the wet ingredients and gently mix until just combined, avoiding overmixing.
05 -
Gently fold in the semi-sweet chocolate chips and chopped nuts, if using, reserving a small handful for topping.
06 -
Pour the batter into the prepared loaf pan. Smooth the top with a spatula and sprinkle reserved chocolate chips and nuts over the surface.
07 -
Place the pan in the oven and bake for 50 to 55 minutes, or until a toothpick inserted in the center leaves with only a few moist crumbs attached.
08 -
Allow the loaf to cool in the pan for 15 minutes, then transfer to a wire rack and cool completely before slicing.