Sourdough Zucchini Bread Recipe
This sourdough zucchini bread turns tangy discard and garden zucchini into a moist, cinnamon-spiced loaf that's perfect for breakfast or an afternoon treat.
A Loaf That Solves Two Problems at Once
If you keep a sourdough starter, you know the discard pile up problem well. If you grow zucchini, you know the summer glut problem even better. This sourdough zucchini bread recipe solves both at once, turning tangy discard and shredded garden zucchini into a moist, tender, deeply spiced loaf that tastes like a bakery treat but comes together in one bowl.
This is one of those sourdough discard ideas that feels almost too easy. There's no long fermentation wait, no finicky proofing schedule. You just mix, pour, and bake, which makes it one of the more approachable recipes using sourdough discard for anyone newer to sourdough baking.
Before we get cooking, the right tools and ingredients make a real difference here. A sturdy box grater keeps your zucchini shreds fine and even, a good loaf pan promotes even browning, and a reliable kitchen scale helps you measure flour precisely so your crumb turns out tender instead of dense. These are the products that genuinely help this recipe shine:
Why Sourdough Discard Belongs in This Batter
Most sourdough healthy recipes lean on discard for a reason. It adds a subtle tang that balances the sweetness of the sugar and cinnamon, and it contributes structure without requiring any additional flour. Unlike a true sourdough loaf, this bread doesn't need the discard to be active or bubbly. Straight from the fridge is perfect.
This makes it one of the most forgiving sourdough loaves you can bake. There's no waiting for rise, no worrying about proofing temperature. Just whisk it into the wet ingredients and move on.
Chef's Tip: Don't squeeze your zucchini completely dry. A little residual moisture is exactly what keeps this bread soft and tender days after baking. Just blot it gently with a paper towel to remove the excess.
The Secret to a Moist, Tender Crumb
The combination of oil, brown sugar, and zucchini keeps every slice incredibly moist, while cinnamon and a touch of vanilla round out the flavor into something cozy and warm. This loaf sits happily among quick sourdough breakfast recipes, since a slice with coffee makes a satisfying start to the day, but it's equally at home as an afternoon snack or simple dessert.
A few things matter most for texture:
- Don't overmix once the flour goes in. Stir just until the streaks disappear.
- Grate the zucchini finely so it melts into the batter rather than leaving big wet pockets.
- Check for doneness early. Ovens vary, and a few extra minutes can dry out an otherwise perfect loaf.
Ready to make it? Here is the full step-by-step recipe:
Sourdough Zucchini Bread Recipe
This sourdough zucchini bread turns tangy discard and garden zucchini into a moist, cinnamon-spiced loaf that's perfect for breakfast or an afternoon treat.
Ingredients
- 1 3/4 cups all-purpose flour, spooned and leveled
- 1 cup sourdough discard, unfed, straight from the fridge is fine
- 1 1/2 cups zucchini, grated, lightly squeezed of excess moisture
- 3/4 cup granulated sugar
- 1/4 cup brown sugar, packed
- 1/2 cup vegetable oil, or melted coconut oil
- 2 large eggs, room temperature
- 1 tsp vanilla extract
- 1 1/2 tsp ground cinnamon
- 1 tsp baking soda
- 1/2 tsp baking powder
- 1/2 tsp salt, fine sea salt
- 1/2 cup walnuts, chopped, optional
Instruction
Preheat the oven to 350 degrees F (175 degrees C) and grease a 9x5-inch loaf pan, lining it with parchment for easy removal.
Grate the zucchini, then press it gently between paper towels to remove some excess moisture, but don't squeeze it bone dry.
In a large bowl, whisk together the sourdough discard, granulated sugar, brown sugar, oil, eggs, and vanilla extract until smooth.
Fold in the grated zucchini until evenly combined.
In a separate bowl, whisk together the flour, cinnamon, baking soda, baking powder, and salt.
Add the dry ingredients to the wet ingredients and stir gently just until no streaks of flour remain, being careful not to overmix.
Fold in the chopped walnuts if using.
Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Bake for 55 to 65 minutes, until a toothpick inserted in the center comes out clean or with just a few moist crumbs.
Let the loaf cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before slicing.
Equipment
- 9x5-inch loaf pan
- Box grater
- Large mixing bowl
- Whisk
- Rubber spatula
- Wire cooling rack
Notes
Serving, Storing, and Making It Your Own
This bread is wonderful on its own, but a light smear of butter or cream cheese while it's still slightly warm takes it over the top. It also holds up well as one of your go-to summer sourdough discard recipes, since zucchini season and sourdough discard season tend to overlap perfectly.
For storage, keep the cooled loaf wrapped tightly at room temperature for a couple of days, refrigerate it for up to a week, or freeze individual slices for a grab and go treat. If you want to switch things up, try folding in chocolate chips instead of walnuts, or swapping half the cinnamon for pumpkin spice for a fall twist. However you make it, this loaf is proof that Sourdough Recipes Healthy enough for breakfast can still taste like dessert.
