Desserts
The America's Test Kitchen ultimate banana bread recipe delivers the perfect balance of a moist crumb and ideal rise—no more dense, dry loaves or sunken centers. This refined version uses a precise mix of ingredients and baking techniques to create a loaf that's tender, flavorful, and consistently reliable.
After years of testing, they've cracked the code on achieving that signature texture and height every time.
The secret lies in the baking soda-to-baking powder ratio and how the batter is mixed—just until combined, not overworked—which prevents a tough crumb. A touch of sour cream adds richness without heaviness, while melted butter keeps the texture tender.
The recipe also includes a step to fold in bananas at the end, ensuring they stay intact and contribute natural sweetness without turning the bread mushy.
What you'll end up with is a golden-brown loaf with a crackly top and a crumb so moist it stays fresh for days. The aroma alone will fill your kitchen with warmth, and each slice offers that perfect balance of banana flavor and subtle sweetness.
This isn't just banana bread—it's a foolproof, restaurant-quality dessert that's easy to master at home.
Whether you're baking for a crowd or treating yourself to a classic comfort dessert, this recipe delivers consistently perfect results. The best part? It's simple enough for beginners but refined enough to impress even seasoned bakers. Let's get started on creating your best banana bread yet.
Ingredients for america's test kitchen ultimate banana bread
The secret to perfect banana bread lies in these 13 ingredients—simple yet precise.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas 🍌 | 3 medium | Peeled, mashed thoroughly |
| All-Purpose Flour 🌾 | 1 ½ cups | Sifted for best texture |
| Granulated Sugar 🍚 | ¾ cup | Light brown preferred |
| Light Brown Sugar 🍚 | ½ cup | Packed firmly |
| Unsalted Butter 🧈 | ½ cup | Melted, cooled slightly |
| Sour Cream 🥛 | ¼ cup | Full-fat for richness |
| Large Eggs 🥚 | 2 whole | Room temperature |
| Baking Soda 🧂 | ½ tsp | Freshly measured |
| Baking Powder 🧂 | ¼ tsp | Double-acting preferred |
| Salt 🧂 | ½ tsp | Fine sea salt |
| Pure Vanilla Extract 🌿 | 1 tsp | High-quality preferred |
| Chopped Walnuts 🌰 | ½ cup | Toasted lightly |
| Unsweetened Shredded Coconut 🥥 | ¼ cup | Freshly shredded |
The bananas are the star—pick ones with brown spots (not too mushy) for that perfect sweetness. Trader Joe's or Whole Foods usually have the ripest ones, but check your local market's produce section first. For the sugars, light brown sugar adds moisture while granulated gives structure. The butter? Plugrá or Land O'Lakes unsalted are my go-tos—never salted. And that sour cream? Full-fat only—it keeps the crumb tender without making it gummy. Toast those walnuts for 5 minutes at 350°F before adding—they add such a nice crunch!
No sour cream? Plain Greek yogurt works too—same tang, similar texture. Short on walnuts? Pecans or almonds toast just as nicely. The baking powder and soda are non-negotiable—Diamond Crystal baking powder is my secret weapon for reliable rise. Vanilla extract? Cheap stuff tastes like perfume—splurge on McCormick Pure or Goya. For the coconut, freshly shredded is best (those pre-shredded bags get clumpy), but if you must, Trader Joe's pre-shredded works in a pinch. And if you're worried about the bread being too sweet, the walnuts and coconut add just enough balance.
This batter keeps for 2 days in the fridge—cover it tightly to prevent drying. For best results, bake it the same day you mix it. The loaf stays fresh for 4-5 days at room temperature, wrapped in foil. Freeze slices for up to 3 months—just thaw at room temp before serving. Pro tip: Brush the warm loaf with a little melted butter while it's still in the pan—game-changer for that restaurant-quality crust. And if you make a double batch? It reheats beautifully in a 350°F oven for 5 minutes—like fresh out of the oven!
Why You'll Love This Recipe
- No Fuss Mix-In: I’ll be real—this recipe lets you use whatever’s in your fruit bowl. Overripe bananas? Perfect. A handful of walnuts or chocolate chips? Even better. The base is foolproof, so you’re not stuck with a sad, dense loaf if you skip the extras.
- Caramel-Kissed Crumb: That perfect balance of brown sugar and butter? It delivers a moist, tender crumb with just the right chew. Honestly, the first bite makes me pause—I swear it tastes like a bakery’s secret.
- Weeknight Hero: Slice it for breakfast, pack it for lunch, or serve it with dinner. The loaf keeps beautifully for days, and those slices toast up like a dream. (Yes, even on a Tuesday night when you’re running late.)
- Pantry Staple Magic: Five ingredients, zero specialty items. You’re already stocked—this isn’t some Pinterest fantasy. Plus, it’s cheap enough to bake twice a month without flinching. My go-to when I need something reliable.
Step-by-step instructions for america's test kitchen ultimate banana bread
Here's the foolproof method that guarantees a tender crumb and perfect rise every single time.
Prepare the Banana Mixture
Start by mashing the 3 medium ripe bananas thoroughly in a large mixing bowl until completely smooth. I like to use a potato masher for this step—it gives you better control than a fork and prevents over-mixing. The bananas should be completely free of lumps, but don't worry about getting it perfectly smooth yet.
Add the 0.75 cup granulated sugar and 0.5 cup light brown sugar to the mashed bananas. Stir well to combine completely. The sugars will help balance the natural sweetness of the bananas while adding moisture to the batter. Let this mixture sit for 5 minutes while you prepare the other ingredients—this gives the flavors time to meld slightly.
Mix Wet Ingredients
To the banana-sugar mixture, add the 0.5 cup melted unsalted butter (cooled slightly), 0.25 cup sour cream, 2 whole large eggs, 1 tsp pure vanilla extract, and 0.5 tsp salt. Whisk everything together until fully combined. The batter should be smooth and slightly thick, but not overly stiff. If you notice any lumps in the butter, gently press them against the side of the bowl with a spatula to emulsify.
This is where the magic happens—the combination of sour cream and melted butter creates an incredibly tender crumb. The eggs add structure while keeping the bread moist. Don't skip the salt—it's crucial for balancing flavors in this recipe.
Combine Dry Ingredients
In a separate bowl, whisk together the 1.5 cups all-purpose flour, 0.5 tsp baking soda, and 0.25 tsp baking powder. Sifting the flour first helps prevent lumps in the final batter. Gently fold the dry ingredients into the wet mixture using a spatula, mixing just until combined. You should still see some flour streaks—overmixing develops gluten and makes the bread tough.
Fold in the 0.5 cup chopped walnuts and 0.25 cup unsweetened shredded coconut at this stage. The nuts and coconut add wonderful texture contrast to the soft bread. Be careful not to overmix—just distribute them evenly throughout the batter. The final mixture should be thick but pourable.
Prepare and Bake
Preheat your oven to 350°F and grease a 9x5-inch loaf pan thoroughly with butter or nonstick 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 about ⅔ of the pan—this gives you room for the bread to rise.
Bake for 50-60 minutes, or until a toothpick inserted in the center comes out clean and the top is golden brown. Here's the thing—your oven might run hot, so start checking at the 45-minute mark. The bread is done when it springs back slightly when pressed gently in the center. If the top browns too quickly, tent the pan with foil after 30 minutes to prevent overbrowning.
Cool and Serve
Remove the banana bread from the oven and let it cool in the pan for 10 minutes. Then transfer it to a wire rack to cool completely. This cooling period is crucial—it allows the bread to set properly and prevents a gummy texture. I know it's tempting to cut into it immediately, but patience here makes all the difference.
Once completely cool, slice and serve. Each slice should have a moist, tender crumb with just the right amount of chew. The walnuts and coconut add delightful texture contrasts, while the caramelized top adds sweetness. Store leftovers wrapped tightly at room temperature for up to 3 days, or freeze for up to 3 months. This bread actually tastes better the next day as the flavors develop!
Pro Tips For Making America'S Test Kitchen Ultimate Banana Bread
- MEASURE BUTTER COOL: The recipe calls for softened butter—not melted, not fridge-cold, but just pliable enough to press into the flour. I used to eyeball it and ended up with greasy streaks or dry crumb. Press your thumb into it: if it springs back slowly, you’re good. If it flattens like buttercream, pop it in the fridge for 5 minutes.
- MASH BANNANAS WELL: This isn’t just a quick smash—you’re making a purée. After mashing, press the bananas through a fine-mesh sieve or the large holes of a box grater to remove skins and fiber. The smoother the batter, the more tender the crumb. (Yes, it’s extra work, but the texture makes it worth it.)
- DON’T OVERMIX THE BATTER: After folding in the flour, give it one turn with a spatula—just until combined. This recipe relies on the butter’s fat to create a moist crumb, and overmixing develops gluten, turning your bread into a dense brick. Stop when there are a few dry spots; they’ll disappear as it bakes.
- USE A LIGHT HAND WITH LEAVENING: The recipe includes baking soda and baking powder for lift. When mixing, gently fold them in last—don’t whisk them into oblivion. Overworking the batter risks activating all the leavening at once, which can cause a bitter taste or a sunken center. A few lumps are fine; the heat will handle the rest.
Creative variations of these flavors
Spiced Variations
Add warmth with 1 tsp cinnamon and ½ tsp nutmeg to the dry ingredients for a classic spiced version. For extra depth, swap ½ cup walnuts for ½ cup pecans and add ¼ cup dried cranberries for tart-sweet contrast. I like toasting the pecans first for that nutty aroma. 🌶️
Chocolate Twist
Replace ½ cup walnuts with ½ cup chopped dark chocolate chunks (60% cocoa or higher) and fold in ¼ cup cocoa powder with the dry ingredients.
For a richer version, add 2 oz melted dark chocolate to the wet ingredients. This creates a decadent "banana bread brownie" hybrid with fudgy pockets.
Tropical Fusion
Swap the walnuts for ½ cup macadamia nuts and fold in ¼ cup unsweetened shredded coconut plus 2 tbsp toasted coconut flakes on top before baking. Add ½ tsp lime zest to the wet ingredients for a bright citrus note. This version tastes like a vacation in every bite.
Protein-Packed
Boost nutrition by replacing ½ cup flour with ½ cup oat flour and adding ¼ cup Greek yogurt to the wet ingredients. Fold in ½ cup chopped almonds and ¼ cup pumpkin seeds for crunch.
This version keeps all the moisture while adding fiber and plant-based protein—perfect for breakfast or snacks.
Gluten-Free Adaptation
Use 1.5 cups gluten-free 1:1 baking flour (like Bob's Red Mill) and add 1 tbsp xanthan gum to the dry ingredients. Replace the walnuts with ½ cup chopped pecans and reduce the coconut to ¼ cup.
The texture stays moist but slightly denser—still delicious! This version works perfectly for those with gluten sensitivities.
Seasonal Citrus
For spring or summer, add 1 tbsp orange zest and 1 tbsp lemon juice to the wet ingredients. Replace the walnuts with ½ cup candied pecans (toss pecans in 2 tbsp brown sugar and 1 tsp cinnamon, bake at 350°F for 10 minutes).
The citrus brightens the banana flavor beautifully. 🍊
Nutrition facts
Frequently asked questions
Why does this banana bread recipe use both baking soda and baking powder?
The combination creates the perfect rise and texture. The baking soda reacts with the acidic ingredients (like bananas and sour cream) for immediate lift, while the baking powder provides a slower, more controlled rise. This prevents a dense crumb while ensuring the bread stays moist. The ratio of 0.5 tsp baking soda to 0.25 tsp baking powder is key for that signature tender yet springy texture.
Can I substitute sour cream with something else if I'm out?
Use 0.25 cup plain Greek yogurt (full-fat works best) or 0.25 cup buttermilk as a 1:1 substitute. Both add moisture and richness, though Greek yogurt gives a slightly tangier flavor. Avoid low-fat versions—they can make the bread dry. If you're dairy-free, use 0.25 cup unsweetened applesauce or 0.25 cup silken tofu blended smooth.
Why does my banana bread always turn out dry or gummy?
Overmixing the batter develops gluten, making the bread tough. Mix just until combined—you should still see flour streaks. For dryness, ensure your bananas are ripe (with brown spots) and don't overbake. Check doneness at 45 minutes—the toothpick test is key! For gummy texture, let the bread cool completely before slicing. The 10-minute rest in the pan is crucial for setting properly.
How do I make this recipe in a different-sized pan?
For a 9x9-inch square pan, reduce baking time to 40-45 minutes and fill it ⅔ full. For a 8x4-inch loaf pan, bake for 55-65 minutes and fill it ⅔ full. Adjust times based on your oven—always check with the toothpick test. The key is maintaining the same batter depth (about 2 inches) for even baking. If using a round cake pan, reduce batter by 20% to prevent overflow.
Can I add chocolate chips or nuts beyond what's listed?
Yes, but keep it balanced! Add up to ½ cup extra nuts or chocolate chips total, replacing some of the walnuts or coconut. For chocolate, use 60%+ cocoa dark chocolate to avoid overpowering the banana flavor. Toast nuts first for better flavor—spread them on a baking sheet and bake at 350°F for 5-7 minutes until fragrant. Overloading can make the bread dense, so measure carefully.