01 -
Preheat the oven to 325°F (165°C) and prepare a loaf pan by greasing or lining with parchment paper.
02 -
Peel and grate the zucchini. Do not squeeze out the moisture.
03 -
In a large bowl, whisk together eggs, sugar, sourdough discard, zucchini, oil, and vanilla extract until well combined.
04 -
In a separate bowl, whisk together flour, baking soda, salt, and cinnamon.
05 -
Add the dry ingredients to the wet mixture and stir until just incorporated.
06 -
Pour the batter into the prepared loaf pan and smooth the top.
07 -
Bake for 60 minutes or until a toothpick inserted into the center comes out clean.
08 -
Let cool in the pan briefly, then transfer to a wire rack. Slice and enjoy.