Side Dishes
America's Test Kitchen zucchini bread recipe delivers a moist, tender loaf with a perfect crumb—all while sneaking in vegetables you'll actually want to eat. 💛 The secret lies in precise measurements and a foolproof mixing technique that transforms grated zucchini into a bread so flavorful, no one will guess it's secretly healthy.
This recipe builds on America's Test Kitchen's signature methodical approach, where every ingredient plays a crucial role. The combination of all-purpose flour, brown sugar, and a touch of cinnamon creates that classic zucchini bread flavor, while the zucchini itself keeps the texture remarkably moist without making the bread dense.
A simple glaze of powdered sugar and lemon juice adds that restaurant-quality finish.
What sets this apart is the foolproof technique that ensures consistent results every time—no dry crumb, no soggy texture. The bread bakes up with a golden crust and a tender interior, perfect for slicing into thick, hearty portions.
The recipe even includes optional add-ins like chocolate chips or walnuts for customization without sacrificing the signature moisture.
Ready in just 60 minutes from start to finish, this zucchini bread is ideal for breakfast, snacking, or gifting. The precise measurements and clear instructions make it accessible for home bakers of all skill levels, while the result is a loaf that rivals any bakery version. Let's get baking!
Ingredients for america's test kitchen zucchini bread
Precision measurements and quality ingredients create America's Test Kitchen's signature zucchini bread.
| Ingredient | Amount | Notes |
|---|---|---|
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted for optimal texture |
| Granulated Sugar 🍚 | 1 cup | White or light brown |
| Packed Brown Sugar 🍚 | ¾ cup | Light or dark variety |
| Unsalted Butter 🧈 | 1 cup | Softened to room temperature |
| Large Eggs 🥚 | 2 whole | Room temperature for even mixing |
| Vanilla Extract 🌿 | 2 tsp | Pure extract preferred |
| Ground Cinnamon 🌶️ | 2 tsp | Freshly ground if possible |
| Ground Nutmeg 🌶️ | ½ tsp | Freshly grated preferred |
| Baking Soda 🧪 | 2 tsp | Pure baking soda |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Medium Zucchini 🥒 | 1 ½ lb | Grated and drained well |
| Powdered Sugar 🍚 | ¼ cup | For glaze |
| Fresh Lemon Juice 🍋 | 1 tbsp | From 1 small lemon |
| Optional Chocolate Chips 🍫 | 1 cup | Semi-sweet or milk chocolate |
| Optional Walnuts 🌰 | ½ cup | Chopped, toasted |
The zucchini is the unsung hero here—medium-sized yields the perfect moisture without overpowering. Grated and drained for 10 minutes in a colander, it releases excess liquid that would otherwise make the bread dense. For the best flavor, Trader Joe's organic zucchini or local farmers' market varieties work exceptionally well. The brown sugar adds depth, so light brown gives a slightly richer caramel note than white. Butter should be room temperature—cold butter creates pockets in the batter, while melted butter can make the texture too dense. If you're short on time, microwave the butter for 40 seconds to just soften it.
No vanilla extract? Vanilla bean paste works beautifully, or even a scraped vanilla bean. Substituting sugar? Coconut sugar at a 1:1 ratio adds subtle caramel notes, but the texture may be slightly denser. For nutmeg, pre-ground is fine, but freshly grated from a whole nutmeg adds complexity. The optional chocolate chips and walnuts can be swapped for white chocolate chips or pecans—just adjust the amount to taste. If you're avoiding added sugar, reduce the granulated sugar by 0.25 cup and add 0.25 cup unsweetened applesauce to maintain moisture.
This bread keeps exceptionally well—3 days at room temperature wrapped in plastic, or 1 week refrigerated in an airtight container. For longer storage, slice and freeze portions on a tray, then transfer to a bag for up to 3 months. The glaze can be made ahead and stored in the fridge for 1 week, though it's best used fresh. To reheat, wrap slices in a damp paper towel and microwave for 10 seconds—restores that bakery-fresh warmth without drying out the crumb.
Why You'll Love This Recipe
- No-Fuss Mixing: The dough comes together in one bowl—no fancy techniques, just creaming butter with sugars until light and fluffy. That’s it. No standing over a hot stove for hours, just a few minutes of stirring while you wait for the oven to preheat.
- Sweet & Moist Magic: The combo of granulated and brown sugar gives it that perfect balance—just enough caramel depth without being cloying. And the butter? Rich enough to make every slice feel like a treat, even when it’s just me grabbing one straight from the pan.
- Leftovers That Last: This bread stays fresh for days (if it lasts that long) and freezes like a dream. I’ll often bake two loaves—one for breakfast, one to stash for when I forget to pack a snack. No sad, dry ends here; it reheats perfectly in the toaster.
- Budget-Friendly Staples: You’re already using pantry basics—flour, sugar, butter—so it’s cheap to make again and again. Honestly, I’ve made this with store-brand ingredients and it’s still the best zucchini bread I’ve ever had. That’s saying something.
Step-by-step instructions for america's Test Kitchen zucchini bread
Master the science behind this legendary loaf—where tender crumb meets perfectly balanced sweetness.
👨🍳 Step 1: Grate and Drain the Zucchini for Optimal Moisture
Start by grating the 1.5 lb medium zucchini using the large holes of a box grater. Place the grated zucchini in a clean kitchen towel or cheesecloth and gently squeeze out all excess moisture. This step is critical—wet zucchini makes bread dense. You should end up with about 3 cups of drained zucchini. The moisture removal ensures your bread stays moist without being soggy.
While you work, let the 1 cup unsalted butter and 2 whole large eggs come to room temperature. Room-temperature ingredients mix more evenly, creating a lighter crumb. I like to place them in warm water for 10 minutes if they're chilled straight from the fridge. This small preparation step makes a noticeable difference in texture.
🍳 Step 2: Cream Butter and Sugars for Maximum Fluffiness
In a stand mixer fitted with the paddle attachment, beat the 1 cup unsalted butter on medium speed until smooth and creamy—about 2 minutes. Add the 1 cup granulated sugar and 0.75 cup packed brown sugar, then beat for 3-4 minutes until the mixture is light and fluffy. You'll see it nearly double in volume and become pale in color.
This creaming process incorporates air into the batter, which develops that signature tender crumb. Don't rush this step—under-creaming leads to dense bread. I press down gently on the mixture with a spatula occasionally to check for proper aeration. When it leaves clean spatula marks that hold their shape, it's ready for the next ingredients.
👨🍳 Step 3: Combine Wet Ingredients and Fold in Zucchini
Add the 2 whole large eggs, one at a time, mixing well after each addition. Then stir in the 2 tsp vanilla extract, 2 tsp ground cinnamon, 0.5 tsp ground nutmeg, 2 tsp baking soda, and 0.5 tsp salt. Mix on low speed just until combined—about 30 seconds. The batter will look slightly curdled, which is normal.
In a separate bowl, whisk together the 2.5 cups all-purpose flour. With the mixer on low speed, gradually add the flour to the wet ingredients, mixing just until the dry ingredients disappear. Stop mixing as soon as you see a few flour streaks remaining—overmixing develops gluten and makes the bread tough. Gently fold in the drained zucchini using a rubber spatula until evenly distributed.
🥘 Step 4: Mix in Optional Add-Ins and Prepare the Loaf Pan
If using, fold in the 1 cup optional chocolate chips and 0.5 cup optional walnuts with a spatula. The chocolate chips add pockets of molten sweetness, while the walnuts contribute a satisfying crunch. For even distribution, I like to divide the batter in half and fold the add-ins into each portion separately before combining.
Preheat your oven to 350°F and grease a 9x5-inch loaf pan thoroughly with butter or cooking spray. Line the bottom with parchment paper for easy removal. Pour the batter into the prepared pan and smooth the top with a spatula. The batter should fill the pan about ¾ full—it won't rise significantly in volume.
🔥 Step 5: Bake to Golden Perfection and Glaze
Bake for 50-60 minutes until a toothpick inserted in the center comes out clean. The top should be golden brown and the internal temperature should reach 200°F. I like to tent the pan loosely with foil after 30 minutes to prevent over-browning if my oven runs hot.
While the bread bakes, prepare the glaze by whisking together the 0.25 cup powdered sugar and 1 tbsp fresh lemon juice until smooth. As soon as the bread finishes baking, remove it from the oven and let it cool in the pan for 10 minutes. Then invert onto a wire rack and brush the warm glaze over the top. The glaze should drip slightly down the sides—this indicates proper consistency. Let the bread cool completely before slicing for clean cuts.
Pro Tips For Making America'S Test Kitchen Zucchini Bread
- MEASURE BROW SUGAR PACKED: I learned this the hard way—when the recipe says "packed," it means firmly pressed into the cup. If you scoop it loosely, you’re adding less volume than the recipe expects, and your bread will turn out denser than intended. Use a spoon to press it down hard, then level it off.
- CREAM BUTTER AND SUGARS COLD: Don’t let that butter get soft while mixing—take the bowl out of the fridge for 5 minutes max before creaming. If it’s too warm, the butter and sugars will turn into a sticky mess instead of fluffy batter. Cold butter creates air pockets that make the bread light.
- DON’T OVERMIX THE BATTER: Once you fold in the zucchini and flour, stop mixing the second everything is just combined. Overmixing develops gluten, and your bread will turn out tough instead of tender. Use a spatula to gently fold—this isn’t a cake, and it doesn’t need to be smooth.
- LET THE BREAD COOL SLOWLY: Resist the urge to slice into it the second it comes out of the oven. Tent it with foil and let it sit for at least 15 minutes—this keeps the crumb from falling apart. I know, I know, you’re hungry, but rushing this step means dry, crumbly bites instead of moist, perfect slices.
Creative variations of this dish
Chocolate Chip Bliss
Swap out the optional add-ins for 1½ cups semi-sweet chocolate chips and ½ cup white chocolate chunks for a decadent twist. The white chocolate melts beautifully, creating pockets of creamy sweetness that contrast perfectly with the warm spices.
I like to fold in ¼ cup chopped toasted pecans too—they add crunch and a buttery depth. For extra richness, use dark chocolate (60% cocoa) alongside the semi-sweet chips. 🍫
Apple Cinnamon Swirl
Add 1 cup finely diced tart apples (like Granny Smith) to the batter, then create a swirl by folding in ½ cup softened brown sugar and 2 tbsp chopped candied ginger before baking.
The apples caramelize beautifully, creating a moist, fruity center. For presentation, sprinkle the top with extra cinnamon and chopped pecans before baking. This variation tastes like autumn in every bite.
Spiced Pumpkin Twist
Replace half the zucchini with 1 cup pure pumpkin puree (not pumpkin pie filling) and add 1 tsp pumpkin pie spice to the dry ingredients. The pumpkin adds natural sweetness and moisture, while the spice blend enhances the warm cinnamon flavor.
For texture, fold in ½ cup chopped pecans and ¼ cup dried cranberries—they add a festive touch perfect for fall gatherings. 🎃
Lemon Blueberry Bright
Boost the lemon flavor by adding zest from 1 lemon to the wet ingredients and folding in 1 cup fresh blueberries (tossed in 1 tbsp flour to prevent sinking). The blueberries stay juicy while baking, adding bursts of tangy sweetness.
For extra brightness, brush the baked loaf with an additional 1 tbsp lemon juice after glazing. This variation is perfect for breakfast or brunch.
Nutty Caramel Version
Fold in ½ cup chopped walnuts and ½ cup chopped pecans, then drizzle ¼ cup caramel sauce (store-bought or homemade) over the batter before baking. The caramel drips down slightly during baking, creating a sticky, gooey center.
For a professional touch, sprinkle the top with flaky sea salt before baking—it balances the sweetness beautifully. 🌰
Gluten-Free Adaptation
Replace the all-purpose flour with 2 cups gluten-free 1:1 baking flour (like Bob's Red Mill) and add 1 tsp xanthan gum to the dry ingredients. For moisture, reduce the zucchini to 1 cup and add ¼ cup unsweetened applesauce to the wet ingredients.
The texture stays tender, though slightly denser than traditional bread. This version works perfectly for those with gluten sensitivities while keeping the same delicious flavor profile. 🌾
Nutrition facts
Frequently asked questions
Why does America's Test Kitchen zucchini bread stay so moist?
The secret lies in properly draining the grated zucchini and using a precise ratio of wet to dry ingredients. The recipe calls for 3 cups drained zucchini (after squeezing out excess moisture) which adds natural hydration without making the bread dense. The combination of butter, brown sugar, and eggs also creates a rich, tender crumb that holds up beautifully.
Can I substitute applesauce for some of the zucchini?
Yes, but with caution! For every ½ cup zucchini you replace, use ¼ cup unsweetened applesauce to maintain moisture. The applesauce adds natural sweetness, so you may want to reduce the granulated sugar by 1-2 tablespoons. Keep in mind this will slightly alter the texture—expect a denser but still moist loaf.
What's the best way to store leftover zucchini bread?
Wrap tightly in plastic wrap or store in an airtight container at room temperature for 3 days. For longer storage, refrigerate for up to 1 week or freeze slices for 3 months. To reheat, wrap slices in a damp paper towel and microwave for 10-15 seconds—this restores freshness without drying out the crumb.
Why did my zucchini bread turn out dense? This usually happens when zucchini isn't drained properly or the batter is overmixed.
Can I make this recipe without eggs?
Yes, for a vegan version! Replace the 2 eggs with 2 tablespoons ground flaxseed mixed with 6 tablespoons water (let sit for 5 minutes to thicken). Alternatively, use ½ cup unsweetened applesauce or ½ cup mashed banana. The texture will be slightly denser but still delicious. For best results, reduce the baking powder by ½ teaspoon to compensate for the lack of egg structure.