01 -
Set oven to 325°F and allow it to preheat thoroughly while preparing ingredients.
02 -
Grease a standard 9x5 inch loaf pan or line with parchment paper for easy removal.
03 -
Peel one medium zucchini and shred on the large holes of a box grater. Do not squeeze out excess moisture.
04 -
In a large mixing bowl, whisk together eggs, granulated sugar, sourdough discard, shredded zucchini, vegetable oil, and vanilla extract until well blended.
05 -
Sprinkle flour, baking soda, salt, and ground cinnamon into the wet mixture. Gently stir with a spatula until just combined. Avoid overmixing to maintain a tender crumb.
06 -
Pour batter evenly into the prepared loaf pan, smoothing the surface with a spatula.
07 -
Bake in the center of the preheated oven for 60 minutes. Check doneness by inserting a toothpick into the center; it should come out clean.
08 -
Allow loaf to cool in the pan for 10 minutes. Transfer to a wire rack and cool completely before slicing and serving.