Desserts
America's Test Kitchen's ultimate banana bread recipe delivers the perfect balance of moist crumb, tender swirls, and a golden crust every single time. After years of testing and refining, this method transforms overripe bananas into a dense, flavorful loaf with a texture that's impossible to resist.
The secret lies in precise ingredient ratios and a baking technique that ensures consistent results.
What sets this recipe apart is the careful combination of butter and oil, which creates a rich, moist crumb without making the bread too heavy. The addition of sour cream adds tenderness, while a touch of cinnamon and nutmeg enhances the classic banana flavor.
Baking at 350°F ensures a perfectly golden crust while keeping the interior tender and moist.
By following these exact proportions and techniques, you'll achieve a banana bread that's restaurant-quality at home. The swirls of banana streusel create beautiful visual appeal, while the flavor is rich and satisfying—ideal for breakfast, snacking, or gifting. This is the banana bread recipe that finally delivers on all the promises.
The beauty of this method is its flexibility—add walnuts for crunch, chocolate chips for indulgence, or keep it classic. Each variation maintains the same perfect texture and flavor balance. Let's get started on creating your ultimate banana bread.
Ingredients for america's test kitchen ultimate banana bread
These 15 ingredients transform overripe bananas into the ultimate banana bread with perfect swirls and crust.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas 🍌 | 3 medium | Overripe with brown spots preferred |
| Unsalted Butter 🧈 | ½ cup | Cold, cubed for streusel |
| Vegetable Oil 🫒 | ½ cup | Light or canola preferred |
| Granulated Sugar 🍚 | 1 cup | White sugar, packed lightly |
| Light Brown Sugar 🍚 | ½ cup | Packed firmly for moisture |
| Large Eggs 🥚 | 2 whole | Room temperature for mixing |
| All-Purpose Flour 🌾 | 2 cups | Sifted, plus extra for pan |
| Baking Soda 🧂 | ½ tsp | Pure baking soda |
| Ground Cinnamon 🌿 | 1 ½ tsp | Freshly ground preferred |
| Ground Nutmeg 🌿 | ¼ tsp | Freshly grated nutmeg |
| Salt 🧂 | ½ tsp | Diamond Crystal preferred |
| Sour Cream 🥛 | ½ cup | Full-fat for tenderness |
| Vanilla Extract 🌸 | 1 tsp | Pure vanilla extract |
| Old-Fashioned Oats 🌾 | ½ cup | Blended into flour for streusel |
| Chopped Walnuts 🌰 | ½ cup | Optional for crunch |
The bananas are the star—overripe with brown spots means sweeter flavor and moister bread. Trader Joe's or local markets often have perfect ones, but grocery store bananas work too. The butter and oil combo is key: butter adds richness while oil keeps the crumb tender. Crisco or vegetable oil works best here. For the sugars, pack the brown sugar firmly—this is what makes the streusel caramelize beautifully. The sour cream might seem odd, but it adds that signature tenderness that separates great banana bread from good.
No overripe bananas? Use ripe bananas and add 1 tbsp maple syrup to compensate. Short on butter? Substitute with an extra 0.25 cup oil, but the texture will be slightly lighter. The walnuts are optional, but if you skip them, add an extra 0.25 cup of oats to the streusel. For the spices, Penzeys or bulk bins at natural food stores have the freshest cinnamon and nutmeg—worth the splurge for that extra warmth. The vanilla extract can be imitation, but pure Madagascar bourbon vanilla makes it restaurant-worthy.
This bread keeps beautifully—3 days at room temperature wrapped in foil, or 1 week in the fridge in an airtight container. For longer storage, slice and freeze portions for up to 3 months. The streusel stays crisp even when reheated—just pop slices in the oven at 350°F for 5 minutes. I always make a double batch because it disappears faster than you'd think, especially with those perfect swirls peeking through the golden crust.
Why You'll Love This Recipe
- Uses stuff you already have: overripe bananas you’d toss, basic sugars, and butter you’d melt anyway. I’ll be real: my grocery bill dropped after I started making this. Plus, it keeps for days without drying out.
- No-Mess Mixing: I swear by this recipe’s "fold it in" method—no overmixing, no lumps, just a smooth batter that comes together in minutes. The butter and oil combo makes it buttery without being greasy, and those ripe bananas? They practically mash themselves.
- Sweet Spot Balance: That perfect blend of granulated and light brown sugar? It’s what makes this bread ridiculously good—caramel undertones with just enough chew. Honestly, the first time I tried it, I nearly ate the dough raw. (Don’t tell anyone.)
- Weeknight Workhorse: Bake it for breakfast, pack slices for lunch, or freeze half for when you’re too tired to think. Between us, this is the loaf I grab when I’ve got a house full of people and zero energy—no one ever complains.
Step-by-step instructions for america's Test Kitchen ultimate banana bread
Here's how to achieve that legendary moist crumb and perfect swirl every time.
👨🍳 Step 1: Prepare the Banana Mixture
Start by mashing the 3 medium ripe bananas with a fork in a large mixing bowl until completely smooth. I like to press them through a fine-mesh sieve to remove any fibrous bits—this ensures a silky texture. Add the 0.5 cup vegetable oil and mix well to combine.
In a separate small bowl, whisk together the 2 whole large eggs, 1 cup granulated sugar, 0.5 cup light brown sugar, 0.5 cup sour cream, and 1 tsp vanilla extract. Pour this mixture into the banana bowl and stir until fully incorporated. The batter should be thick but pourable. This step creates the perfect balance of moisture and structure for that signature tender crumb.
👨🍳 Step 2: Combine Dry Ingredients and Fold Gently
In another bowl, sift together the 2 cups all-purpose flour, 0.5 tsp baking soda, 1.5 tsp ground cinnamon, 0.25 tsp ground nutmeg, and 0.5 tsp salt. Gently fold these dry ingredients into the wet mixture using a spatula, mixing just until combined. Be careful not to overmix—you should still see some flour streaks. This prevents a tough crumb and maintains that perfect texture.
If using, fold in the 0.5 cup chopped walnuts at this stage. For the swirl effect, divide the batter evenly between two mixing bowls. In one bowl, stir in half of the 0.5 cup old-fashioned oats (blended into a fine powder) for the streusel topping. The oats add a delightful crunch that contrasts beautifully with the soft crumb.
🍳 Step 3: Prepare the Pan and Create Swirls
Preheat your oven to 350°F. Generously grease a 9x5-inch loaf pan with 0.5 cup unsalted butter (melted and cooled slightly) and dust it lightly with flour. Tap out any excess flour so it doesn't interfere with the swirls.
Pour half of the plain batter into the prepared pan, spreading it evenly. Then, spoon the oat-streusel batter over the top. Using a butter knife, gently swirl the batters together in a figure-eight motion, creating those iconic marbled patterns. The contrast between the plain batter and streusel will be stunning once baked.
🔥 Step 4: Bake to Golden Perfection
Bake the banana bread for 50-55 minutes, until a toothpick inserted into the center comes out clean and the top is deep golden brown. Here's the thing—don't open the oven door during the first 40 minutes of baking. This helps maintain even heat and prevents the bread from sinking in the middle.
If the top starts browning too quickly, tent the pan loosely with aluminum foil. The bread is done when the edges pull away from the pan slightly and the internal temperature reaches 205°F. Let it cool in the pan for 10 minutes before transferring to a wire rack to cool completely. This resting period ensures the bread sets properly and makes slicing a breeze.
⏰ Step 5: Serve and Enjoy
Once cooled, slice the banana bread into 8 equal servings using a serrated knife. The swirls should be visible and the texture perfectly balanced—moist but not gummy, with a tender crumb and that irresistible streusel contrast. Serve warm with a pat of butter or a drizzle of honey for the ultimate experience.
This recipe delivers on all the promises: a moist crumb, perfect swirls, and a golden crust that's crispy yet tender. The secret lies in the careful balance of ingredients and technique—now you've got the ultimate banana bread down pat!
Pro Tips For Making America'S Test Kitchen Ultimate Banana Bread
- MEASURE BUTTER COLD: The recipe calls for softened butter, but don’t let it get too soft—think "just yielding when pressed," not "melting in your hands." I learned this the hard way when my first batch turned out greasier than a diner short stack. Cold butter incorporates better and keeps the crumb tender without making the bread dense.
- MASH BANANAS WELL: Don’t just smash them with a fork—give those bananas a good going-over with a potato masher or fork until there’s no visible pulp left. The recipe relies on that smooth texture for even baking, and lumps mean uneven cooking. (Yes, even if you’re impatient like me.)
- DON’T OVERMIX THE BATTER: Mix just until the flour is barely incorporated—about 10-12 strokes after adding it. Overmixing develops gluten, and that’s how you end up with a chewy, dense loaf instead of the tender, moist bread this recipe promises. Stop when the batter looks slightly shaggy.
- USE A THERMOMETER FOR DONENESS: The recipe’s baking time is a starting point, but every oven’s quirky. A toothpick should come out with moist crumbs (not wet batter, not dry flour). I was skeptical until I tried it—now I never guess, and neither should you. (Your future self will thank you.)
Pro cooking tips for this dish
Banana Ripeness Matters
The secret to flavor-packed banana bread starts with overripe bananas—those with brown spots and soft flesh. These bananas contain more sugar and natural sweetness, which reduces the need for added sugar.
I always check for blackened spots and a mushy texture when pressing. If you only have ripe bananas, add 1 tablespoon maple syrup to compensate for the lower sugar content. 🍌
Butter-Oil Combo
Using both butter and oil creates the perfect texture: butter adds rich flavor and structure, while oil keeps the crumb moist. For the streusel, use cold cubed butter—this prevents it from melting too quickly during mixing.
I recommend Crisco vegetable oil for its neutral flavor and high smoke point. If you're avoiding dairy, substitute the butter with an extra 0.25 cup oil in the streusel.
Swirl Technique
The iconic swirls start with dividing the batter evenly. Use a butter knife to create clean, even figure-eight patterns in the pan. Work quickly but gently to avoid tearing the batter. For extra drama, add a few extra chopped walnuts to the streusel mixture before swirling.
The contrast between the smooth batter and crunchy streusel makes every slice look like it came from a bakery. 🌟
Baking Science
Baking at 350°F ensures even cooking without burning the streusel. The key is patience—don't open the oven door during the first 40 minutes of baking. This helps maintain consistent heat and prevents the bread from sinking.
A toothpick should come out clean, and the internal temperature should reach 205°F. The bread will pull away slightly from the pan edges when fully done.
Resting Period
Letting the banana bread rest in the pan for 10 minutes after baking is crucial. This allows the moisture to redistribute, preventing a gummy texture. Transferring it to a wire rack to cool completely ensures clean slices.
If you can't wait, slice while still warm—but you'll miss out on the perfect texture. For reheating, pop slices in a 350°F oven for 5 minutes to restore that fresh-baked warmth. ⏰
Equipment Essentials
You'll need a 9x5-inch loaf pan (preferably nonstick or well-greased) and a fine-mesh sieve for smoother banana puree. A spatula helps fold dry ingredients gently, and a serrated knife makes slicing easier.
For the streusel, a food processor or blender works best to grind the oats into a fine powder. I also recommend a digital thermometer to monitor internal temperature accurately. 🔥
Nutrition facts
Frequently asked questions
Why does this recipe use both butter and oil?
The butter adds rich flavor and structure while the oil keeps the crumb moist and tender. This combination creates the signature texture that sets this banana bread apart. The butter also helps create a better streusel topping when used cold and cubed.
Can I make this banana bread without walnuts?
The walnuts are optional and can be omitted entirely. If you skip them, simply add an extra 0.25 cup of oats to the streusel mixture to maintain the same texture and crunch. The flavor will still be delicious without them.
What if my bananas aren't overripe?
If you only have ripe bananas, add 1 tablespoon maple syrup to compensate for the lower natural sugar content. This helps achieve the same sweetness and moisture as overripe bananas. The texture will still be excellent with this adjustment.
How do I store banana bread to keep it fresh?
Wrap the cooled loaf tightly in plastic wrap or store it in an airtight container. It stays fresh at room temperature for 3 days, or you can refrigerate it for up to 1 week. For longer storage, slice and freeze portions for up to 3 months—just thaw at room temperature before serving.
Why does the recipe call for resting the bread in the pan?
The 10-minute rest in the pan allows moisture to redistribute, preventing a gummy texture. This step is crucial for achieving that perfect tender crumb. Skipping it may result in uneven slices or a denser texture. The bread will still be good, but the texture won't be quite as ideal.