Sourdough Cinnamon Zucchini Bread

This sourdough cinnamon zucchini bread is soft, moist, and packed with warm, comforting flavor. Made with sourdough discard, freshly grated zucchini, and a generous sprinkle of cinnamon sugar, it’s the perfect way to turn simple ingredients into a bakery-style dish. The subtle tang from the sourdough enhances the sweetness and spices, creating a perfectly balanced bread that’s cozy without being overpowering.

Ideal for breakfast, snacking, or dessert, this easy sourdough zucchini bread recipe bakes up tender with a beautiful cinnamon aroma and golden crust. It’s a delicious way to use up extra sourdough discard while embracing seasonal baking and clean eating. Whether you’re sharing with family or enjoying a quiet moment with coffee, this loaf is a comforting classic you’ll want to bake on repeat.

Recipe Card

Servings: 12 |

Time: 60 minutes

  • 210 g peeled, shredded, and squeezed zucchini

    320 g sifted all purpose flour

    6 g baking powder

    6 g baking soda

    6 g salt

    3 g cinnamon

    220 g avocado oil

    210 g brown sugar

    100 g granulated sugar

    3 large eggs at room temperature

    12 g vanilla paste

    120 g sourdough discard (room temperature)

    3 tbsp cinnamon sugar mix

    1. Preheat the oven to 350°F convection, and butter a 9"x12" baking dish.

    2. Peel, shred, and using a kitchen towel, squeeze the zucchini to drain the water out, weigh it and set it aside.

    3. In a large mixing bowl, mix all the dry ingredients, and whisk together.

    4. In another large mixing bowl, mix the avocado oil with the sugars, and whisk vigorously to lightly emulsify.

    5. Add the eggs, vanilla paste and sourdough discard, and whisk until all wet ingredients are well blended.

    6. Fold in the zucchini into the wet ingredients.

    7. Pour the wet ingredients into the dry ingredients, fold until all incorporated. DO NOT OVER MIX.

    8. Pour batter into the greased dish, sprinkle with cinnamon sugar, and bake for 50 minutes, or until a toothpick comes out clean.

    9. Let it cool lightly before cutting.