Sourdough Zucchini Bread Recipe
This sourdough zucchini bread is moist, lightly tangy, and packed with summer zucchini, the perfect way to use up sourdough discard while turning garden veggies into a cozy, snackable loaf.
A Loaf That Bridges Two Kitchen Obsessions
If you have a jar of sourdough discard sitting in your fridge and a counter overflowing with summer zucchini, this recipe was written for you. This sourdough zucchini bread takes the tang of discard and the moisture of fresh zucchini and turns them into a soft, tender loaf that tastes like a cross between banana bread and a spice cake. It is one of those sourdough summer recipes that feels like it should be complicated, but really is not.
Whether you are searching for sourdough recipes healthy enough for breakfast, or just need a smart way to use up that extra cup of discard before it takes over your fridge, this loaf checks every box. It is naturally lightly sweetened, packed with vegetables, and endlessly adaptable.
Before we get cooking, the right tools and ingredients genuinely change how this loaf turns out. A sturdy box grater keeps your zucchini shreds even, and a good loaf pan helps the bread rise tall instead of spreading thin. Here are a few kitchen staples worth having on hand.
Why Sourdough Discard Works So Well Here
Sourdough discard is one of the most underrated ingredients for quick sourdough breakfast recipes like this one. It adds a subtle tang that balances the sweetness of the sugar and zucchini, plus a little extra moisture that keeps quick breads from drying out.
This is also one of the easier sourdough discard ideas because there is no fermentation time involved. Unlike sourdough loaves that need hours of proofing, this batter goes straight into the oven, no starter activation required.
Chef's Tip: Do not bother feeding your discard for this recipe. Cold, unfed discard straight from the fridge works perfectly and actually gives the bread a slightly deeper tang.
Getting the Zucchini Right
Zucchini brings incredible moisture to baked goods, but too much liquid can leave you with a soggy loaf. After grating, press the shreds between paper towels or a clean kitchen towel to squeeze out the excess water. You do not need to wring it bone dry, just enough so it is not dripping.
This simple step is the difference between a dense, gummy center and a bakery style crumb. It is a small trick that makes a big difference in any zucchini recipe recipes you try going forward.
Ready to make it? Here is the full step-by-step recipe:
Sourdough Zucchini Bread Recipe
This sourdough zucchini bread is moist, lightly tangy, and packed with summer zucchini, the perfect way to use up sourdough discard while turning garden veggies into a cozy, snackable loaf.
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 and lightly squeezed of excess moisture
- 3/4 cup granulated sugar
- 3/8 cup brown sugar, packed
- 1/2 cup vegetable oil, or melted coconut oil
- 2 large eggs, room temperature
- 1 tsp vanilla extract
- 1 tsp baking soda
- 1 tsp ground cinnamon
- 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, or line it with parchment paper.
Grate the zucchini and gently press it between paper towels or a clean kitchen towel to remove excess moisture, then set aside.
In a large bowl, whisk together the sourdough discard, granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until smooth.
Fold in the grated zucchini until evenly combined.
In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt.
Add the dry ingredients to the wet ingredients and stir 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, or until a toothpick inserted into the center comes out clean or with a few moist crumbs.
Cool the bread 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
- Wire cooling rack
Notes
Serving, Storing, and Mixing It Up
This loaf is delicious plain, but it is also fantastic with a smear of butter or cream cheese while still slightly warm. For breakfast, try toasting a slice and topping it with a drizzle of honey.
A few easy variations:
- Add mix-ins: Chocolate chips, dried cranberries, or shredded coconut all work beautifully.
- Make it dairy-friendly: Swap the oil for melted butter for a richer flavor.
- Turn it into muffins: Divide the batter into a lined muffin tin and bake for 20 to 24 minutes instead.
Store leftovers wrapped tightly at room temperature for up to 2 days, or refrigerate for up to a week. For longer storage, slice the loaf and freeze individual pieces so you always have a quick breakfast or snack on hand, no thawing the whole loaf required.
Whether you are new to baking with discard or already deep into recipes using sourdough discard, this zucchini loaf is a wonderful addition to your rotation. It is forgiving, flavorful, and a genuinely satisfying way to make the most of both your garden and your sourdough starter.
