Equipment
* optional
Ingredients
Dry Ingredients
- 250 g all-purpose flour
- 4 g ground cinnamon
- 1 g ground nutmeg
- 4 g baking powder
- 3 g baking soda
- 3 g fine sea salt
Wet Ingredients and Sugars
- 180 g light brown sugar, packed
- 120 g plain whole milk greek yogurt, room temperature
- 100 ml extra virgin olive oil
- 2 large eggs, room temperature
- 5 g lemon zest
- 5 ml pure vanilla extract
Fold-Ins
- 250 g zucchini, shredded and lightly pressed
- 75 g walnuts, coarsely chopped
Nutrition (per serving)
Nutrition is estimated per serving. Nutrients without complete source data are omitted.
Full nutrition
- Calories
- 324 kcal
- Protein
- 7 g
- Carbohydrates
- 40 g
- Fat
- 16 g
- Fiber
- 2 g
- Sodium
- 266 mg
- Saturated Fat
- 2 g
- Potassium
- 233 mg
- Calcium
- 77 mg
- Iron
- 2.0 mg
- Magnesium
- 30 mg
- Phosphorus
- 122 mg
- Zinc
- 0.8 mg
- Vitamin A
- 23 mcg
- Vitamin C
- 9 mg
- Water
- 45 g
Sources: Aggregated Public Data, USDA FoodData Central
Method
Position an oven rack in the center of the oven and preheat to 175°C (350°F). Lightly grease a 21 x 11 cm loaf pan and line it with parchment paper, leaving a 3 cm overhang along the long sides to serve as handles.
Trim the ends of the zucchini and shred it on the coarse side of a box grater. Transfer the shredded zucchini onto a clean kitchen towel and gently squeeze once or twice over the sink to remove excess surface liquid, leaving the zucchini moist but not dripping wet.
Zest the lemon using a microplane zester directly into a large mixing bowl, avoiding the bitter white pith.
Add the light brown sugar to the large mixing bowl containing the lemon zest. Rub the zest into the sugar using clean fingertips for 30 seconds until the mixture becomes fragrant and resembles damp sand.
In a medium mixing bowl, whisk together the all-purpose flour, ground cinnamon, ground nutmeg, baking powder, baking soda, and fine sea salt until thoroughly blended and free of lumps.
Add the extra virgin olive oil, plain whole milk Greek yogurt, large eggs, and pure vanilla extract to the bowl with the lemon-sugar mixture. Whisk vigorously until the mixture is glossy, smooth, and emulsified.
Pour the whisked dry ingredients into the wet mixture. Using a silicone spatula, fold the ingredients together just until large streaks of flour disappear, leaving a few dry pockets.
Add the grated zucchini and 50g of the chopped walnuts (if using) to the batter. Gently fold with the silicone spatula until the zucchini is evenly suspended throughout the batter.
Scrape the batter into the prepared loaf pan and smooth the surface evenly with the silicone spatula. Scatter the remaining 25g of chopped walnuts across the top surface, pressing them very lightly into the batter.
Transfer the pan to the center rack of the preheated oven at 175°C (350°F) and bake for 55 to 65 minutes. The loaf is done when a toothpick inserted into the center emerges clean or with a few moist crumbs, and an instant-read digital thermometer inserted into the thickest center section registers between 93°C and 96°C (200°F and 205°F), thoroughly exceeding the safe minimum threshold of 71°C (160°F) for egg cookery.
Set the loaf pan on a wire cooling rack and allow the bread to rest inside the pan undisturbed for 10 minutes to allow the delicate crumb structure to set.
Grasp the parchment paper overhangs, gently lift the zucchini bread out of the loaf pan, and place it directly onto the wire cooling rack to cool completely to room temperature before slicing.
Chef's Notes
- Rubbing the fresh lemon zest directly into the brown sugar with your fingers before adding liquids ruptures the citrus oil glands, dispersing flavor far more effectively than merely stirring zest into the batter.
- Greek yogurt contributes vital acidity that interacts with the baking soda to produce an immediate initial leavening boost while also inhibiting gluten development for an exceptionally tender crumb.
- Choose small to medium zucchini whenever possible; oversized garden squash contain excessive watery seed pulp and fibrous skin that dilute spice flavor.
- A fruity, medium-intensity extra virgin olive oil provides subtle grassy undertones that pair impeccably with warm cinnamon, nutmeg, and citrus without tasting oily.
Storage
Refrigerator: 1 week — Store in an airtight container lined with a dry paper towel to absorb surface moisture and preserve crust integrity.
Freezer: 3 months — Slice completely before freezing. Wrap individual portions in parchment paper and seal inside a freezer-grade bag.
Reheating: Warm individual slices in a toaster oven or oven at 150°C (300°F) for 6 to 8 minutes, or microwave on high for 15 to 20 seconds, until thoroughly heated to an internal temperature of at least 74°C (165°F).
Troubleshooting
Bread has a dense, wet, or gummy band near the center bottom
Cause: The zucchini retained excessive water before folding, or the batter was overmixed after flour addition
Fix: Cannot be fixed for the baked loaf, but slicing and toasting individual portions in an oven restores an enjoyable crisp-tender texture
Prevention: Perform a gentle squeeze with a clean towel to remove pooling water from grated squash, and fold dry ingredients strictly until just incorporated
Loaf rises dramatically in the oven but collapses severely in the center while cooling
Cause: Underbaking, or excess leavening agents creating gas pockets that the protein structure cannot support
Fix: If still hot, return immediately to a 175°C (350°F) oven for 10 to 12 minutes; if cooled, cut away the dense sunken center and serve perimeter slices
Prevention: Verify oven temperature with an independent oven thermometer and confirm an internal temperature of at least 93°C (200°F) before removing the loaf
Crust is scorched dark brown while the interior remains underbaked
Cause: Oven rack positioned too high or oven running significantly hotter than calibrated temperature
Fix: Tent with foil immediately, drop oven heat by 15°C (25°F), and continue baking until the core reaches 93°C (200°F)
Prevention: Always bake on the center rack and tent the loaf loosely with aluminum foil at the 40-minute mark if the top is already deep amber
Cultural Context
Zucchini bread emerged as a staple of American home baking during the 1960s and 1970s, spurred by backyard gardening booms that yielded massive late-summer squash surpluses. Creative home cooks adapted traditional oil-based quick bread formulas to utilize the moisture-dense vegetable in sweet formats. This modern iteration enriches the classic mid-century loaf with Mediterranean elements, using extra virgin olive oil and Greek yogurt in place of neutral vegetable oils.










