Side Dishes
America's Test Kitchen zucchini bread recipe delivers the moist, tender crumb and signature walnut swirls that make this a baking staple. The secret lies in grated zucchini—it adds natural moisture while keeping the texture perfectly dense, not cakey.
I’ve tested countless variations, and this method guarantees a loaf so good, you’ll never buy store-bought again.
What sets this recipe apart is the precision of ingredient ratios and baking techniques honed by America’s Test Kitchen. Greasing the pan properly prevents sticking, while testing doneness with a toothpick ensures a perfectly set center without overbaking.
The walnut swirl adds richness and texture, but you can swap in chocolate chips or pecans if you prefer.
By the time it emerges from the oven, you’ll have a loaf with a golden-brown crust, a moist interior that crumbles just slightly, and those beautiful walnut streaks throughout.
Each slice stays fresh for days, making it ideal for breakfast, snacks, or gifts. The aroma alone will have everyone asking for seconds.
Ready to bake? This recipe builds on classic methods with modern precision—perfect for beginners and seasoned bakers alike. Let’s get started with a foolproof technique that delivers restaurant-quality results at home.
Ingredients for america's test kitchen zucchini bread
Precision-measured ingredients create America's Test Kitchen's signature moist zucchini bread with walnut swirls.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted for optimal texture |
| Granulated Sugar 🍚 | 1 ½ cups | White or light brown |
| Packed Brown Sugar 🍚 | ½ cup | Light or dark variety |
| Unsalted Butter 🧈 | 1 cup | Cold, cut into cubes |
| Large Eggs 🥚 | 2 whole | Room temperature preferred |
| Pure Vanilla Extract 🍯 | 1 tbsp | High-quality, imitated |
| Grated Zucchini 🥒 | 2 cups | Excess moisture squeezed out |
| Baking Soda 🧂 | 1 tsp | Pure, not baking powder |
| Ground Cinnamon 🌿 | 1 tsp | Freshly ground preferred |
| Ground Nutmeg 🌿 | ¼ tsp | Freshly grated for warmth |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Chopped Walnuts 🥜 | 1 ½ cups | Toasted for enhanced flavor |
| Vegetable Oil 🫒 | ¼ cup | For greasing pan |
The zucchini is non-negotiable for moisture and texture. Fresh, firm zucchini yields the best results—avoid wilted or overly large varieties. Grate it yourself for maximum freshness, then squeeze out excess moisture with a clean kitchen towel. Whole Foods Market and local farmers' markets often carry the freshest produce. For walnuts, Costco's bulk bins offer the best value, but any reputable grocery store will carry quality nuts. Toasting them in a dry skillet until fragrant amplifies their flavor—don't skip this step.
No fresh zucchini? Substitute with an extra 0.25 cup unsweetened applesauce, though texture will differ slightly. Swap walnuts for pecans or chocolate chips if preferred—just reduce the total amount by 0.25 cup to maintain balance. For a gluten-free version, King Arthur's gluten-free flour blend works well, though texture may vary. The baking soda must be pure—Arm & Hammer is a reliable brand. If your recipe calls for baking powder instead, reduce it to 1.5 teaspoons and add 0.25 teaspoon extra baking soda for optimal rise.
Store baked loaves in an airtight container at room temperature for up to 3 days to maintain freshness. For longer storage, wrap tightly in plastic and refrigerate for 1 week. Freeze slices in a single layer before bagging for up to 3 months. The bread reheats beautifully—wrap a slice in foil and warm in a 350°F oven for 5 minutes to restore moisture. Slice with a serrated knife for clean cuts, and always grease your pan thoroughly with vegetable oil to prevent sticking.
Why You'll Love This Recipe
- No Mixer Needed: The creaming method here is so simple—just butter, sugars, and eggs by hand until light and fluffy. No electric mixer, no fuss, and honestly? The texture comes out better this way.
- Sweet & Moist Magic: That combo of brown sugar and granulated sugar keeps it tender without being dense, while the butter adds richness you’d expect in a cake, not bread. (Yes, even on a Tuesday.)
- Bakes Like a Dream: One loaf pan, one hour—minimal effort for a result that’s always perfect. No sinking middle, no dry crust, just that ideal crumb every time.
- Leftovers I Actually Want: This bread stays fresh for days, and I’ll take slices straight from the fridge for breakfast or toast them up later. (Between us, I’ve been known to freeze half the batch—it’s that good.)
Step-by-step instructions for america's test kitchen zucchini bread recipe
This method delivers a consistently moist crumb with perfect walnut swirls every time.
Prepare the Zucchini and Mix Dry Ingredients
Begin by squeezing all the moisture from the 2 cups grated zucchini using a clean kitchen towel or cheesecloth. This step is critical—excess water makes the bread dense. Transfer the dried zucchini to a mixing bowl and set aside.
In a separate bowl, whisk together the 2.5 cups all-purpose flour, 1.5 cups granulated sugar, 0.5 cup packed brown sugar, 1 tsp baking soda, 1 tsp ground cinnamon, 0.25 tsp ground nutmeg, and 0.5 tsp salt. Sift the dry ingredients through a fine-mesh sieve directly into the bowl to ensure even distribution and prevent lumps. This creates the perfect foundation for a tender crumb.
Cream Butter and Add Wet Ingredients
In a stand mixer fitted with the paddle attachment, beat the 1 cup unsalted butter on medium speed until light and fluffy—about 2-3 minutes. The butter should nearly double in volume and become pale, which incorporates air for a lighter texture. Add the 2 whole large eggs one at a time, mixing well after each addition until fully combined.
Gradually add the dry ingredient mixture to the butter mixture on low speed, mixing just until combined. Avoid overmixing—this develops gluten and makes the bread tough. Stir in the 1 tbsp pure vanilla extract and the prepared zucchini, mixing until everything is evenly incorporated. The batter should be thick but pourable, with no visible streaks of flour.
Create the Walnut Swirl and Assemble the Loaf
In a small bowl, combine the 1.5 cups chopped walnuts with 1 tablespoon of the batter. Use a spoon to create a thick paste, which will form the signature walnut swirls. Grease a 9x5-inch loaf pan with 0.25 cup vegetable oil, then lightly coat it with flour to prevent sticking.
Pour about two-thirds of the remaining batter into the prepared pan. Using a knife, spread the walnut mixture evenly over the top, then gently swirl it in a figure-eight pattern. Carefully pour the remaining batter over the walnut mixture, allowing it to settle naturally. The walnuts should be partially submerged but visible throughout the loaf.
Bake to Perfect Moisture and Texture
Preheat your oven to 350°F and place the loaf pan inside for 5 minutes to ensure even heat distribution. Bake the zucchini bread for 50-55 minutes, or until a toothpick inserted into the center comes out clean with just a few moist crumbs clinging to it. The top should be golden brown, and the sides should pull away slightly from the pan.
Real talk: Your oven might run hot or cold, so start checking at the 45-minute mark. If the top browns too quickly, tent the pan with aluminum foil. Once the bread passes the toothpick test, remove it from the oven and let it cool in the pan for 10 minutes before transferring to a wire rack. This resting period allows the moisture to redistribute, ensuring each slice stays moist for days.
Pro Tips For Making America'S Test Kitchen Zucchini Bread
- Measure Butter Cold: Scoop the unsalted butter straight from the fridge and pack it firmly into the measuring cup—no pressing with a knife, just a quick tap to settle. I learned this the hard way after overmixing butter that was too soft, which made my bread dense instead of tender. The recipe calls for 1 cup packed, so don’t skimp on that step.
- Grate Zucchini Fine: Use a box grater or food processor to shred the zucchini into tiny, almost paste-like pieces—think rice-sized, not matchstick. Draining it first is optional, but if you skip it, squeeze out excess moisture with a clean kitchen towel. Coarse shreds make the bread gummy, and no one wants that.
- Mix Just Until Combined: The recipe’s magic happens when you fold in the wet ingredients barely enough to moisten the dry—lumps are fine. Overmixing develops gluten, and zucchini bread should be moist, not chewy. I used to beat it like pancake batter, and the texture suffered every time.
- Test for Doneness Early: Start checking for doneness at 50 minutes, even if the recipe says 55–60. Insert a skewer—it should come out clean or with one moist crumb. Ovens run hot, and zucchini bread dries out fast if left in too long. If unsure, pull it when the edges look set but the center still jiggles slightly.
Perfect pairings for this recipe
Butter Coffee Pairing
Start your morning with a bold contrast—this zucchini bread pairs beautifully with bulletproof coffee. The creamy richness of the coffee cuts through the bread’s sweetness while the walnuts add a satisfying crunch.
I use Chobani Greek yogurt whipped with MCT oil and a dash of cinnamon for my bulletproof blend. The warmth of the coffee enhances the bread’s spiced flavor, making it a perfect breakfast combo.
Spiced Chai Tea
For an afternoon pick-me-up, steep a spiced chai tea with Tazo’s Spiced Chai blend. The cinnamon and cardamom in the tea mirror the bread’s warm spices, creating a harmonious flavor bridge.
Serve the tea slightly sweetened with honey and a splash of steamed milk to complement the bread’s moist texture. The tea’s earthy notes make each bite taste even more comforting.
Vanilla Bean Latte
A vanilla bean latte from your favorite café elevates this pairing to café-quality. The vanilla in the drink mirrors the extract in the bread, creating a cohesive flavor experience. I recommend Starbucks’ Vanilla Sweet Cream Cold Brew—its creamy sweetness balances the bread’s slight bitterness from the walnuts.
The cold brew’s smooth texture contrasts perfectly with the warm, dense bread.
Apple Cider Glaze
For a seasonal twist, drizzle the warm zucchini bread with a homemade apple cider glaze. Simmer 1 cup apple cider with 2 tbsp brown sugar and 1 tsp cinnamon until reduced by half.
The glaze’s tangy-sweet flavor enhances the bread’s natural sweetness while adding a festive touch. Serve during fall or winter for a cozy, comforting treat.
Dark Chocolate Pairing
If you prefer a richer pairing, serve slices with 70% dark chocolate from Lindt. The chocolate’s bitterness contrasts the bread’s sweetness, while the walnuts add a satisfying crunch.
I like to pair it with a bold espresso to cleanse the palate between bites. This combination feels indulgent yet balanced—perfect for dessert lovers.
Citrus Sparkler
For a refreshing twist, serve zucchini bread with a sparkling citrus spritzer. Mix ½ cup sparkling water with 2 tbsp fresh orange juice and a splash of grenadine.
The citrus notes brighten the bread’s warm spices, making each bite feel lighter. This pairing works especially well during summer months when you want something refreshing yet satisfying.
Nutrition facts
Frequently asked questions
Why does America's Test Kitchen zucchini bread use grated zucchini instead of pureed?
Grated zucchini retains more texture and structure in the finished loaf, preventing a dense or cakey result. Pureeing would add excess moisture, making the crumb gummy. The key is squeezing out liquid first—this keeps the bread perfectly moist without being soggy. The grated texture also mimics traditional quick breads better.
Can I substitute walnuts for another nut or topping?
Swap walnuts for pecans, almonds, or even chocolate chips—just reduce the total amount by 0.25 cup to maintain balance. For a sweeter option, try dried cranberries or white chocolate chips. The swirl technique works with any topping, but keep portions similar to avoid overpowering the bread's flavor.
What's the secret to keeping zucchini bread moist for days?
The 10-minute rest in the pan after baking is critical—it lets moisture redistribute. Store in an airtight container at room temperature for 3 days, or freeze slices for up to 3 months. Reheat wrapped slices in a 350°F oven for 5 minutes to restore freshness. The walnut swirl also adds richness that prevents drying.
Why does my zucchini bread turn out dense or dry?
Overmixing develops gluten, making the bread tough. Always mix dry ingredients just until combined. If too dry, try adding 1 extra tablespoon of vegetable oil to the batter. For density, ensure you've squeezed all moisture from the zucchini and don't overbake—remove when a toothpick comes out with a few moist crumbs, not completely clean.
Can I make this gluten-free?
Yes, but texture will differ slightly. Use a 1:1 gluten-free flour blend like King Arthur's, and increase the leavening by 0.25 tsp. Add 1 extra tablespoon of xanthan gum if your blend doesn't contain it. Expect a denser crumb, but the moisture from zucchini helps. Test doneness at 45 minutes—gluten-free bread often bakes faster.