Desserts
Martha Stewart's banana nut cake delivers that legendary moist, tender crumb and nutty depth that makes it a classic. The secret lies in her signature technique of layering ripe bananas with walnuts and vanilla bean—creating a texture that's impossibly light yet rich. I've baked this version countless times, and the difference between this and store-bought is night and day.
The cake's magic comes from a few key elements: using ripe bananas (the spottier, the better), toasted walnuts for maximum flavor, and a vanilla bean scraped directly into the batter. Martha's method ensures the cake stays moist for days, with just the right balance of sweetness from brown sugar and a hint of cinnamon. The walnuts are toasted separately to enhance their natural oils, which prevents them from becoming soggy.
What you'll end up with is a golden-domed cake with a tender crumb and pockets of caramelized walnuts throughout. The aroma alone will have everyone gathering in the kitchen, and every slice delivers that perfect combination of moist cake and crunchy nuts. This is the kind of dessert that tastes better the next day—if it lasts that long.
For an extra touch of sophistication, Martha often recommends adding a splash of bourbon or rum to the batter, which infuses beautifully into the cake. The frosting options are endless, but her classic buttercream keeps things simple while letting the cake's natural flavors shine. Let's get baking!
Ingredients for banana nut cake recipe martha stewart
These 12 ingredients create Martha's legendary moist cake with walnut crunch and vanilla depth.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas 🍌 | 3 whole | Spotted skin preferred |
| All-Purpose Flour 🌾 | 2 cups | Sifted for light texture |
| Granulated Sugar 🍚 | 1 ½ cups | For sweetness balance |
| Light Brown Sugar 🍚 | ½ cup | Packed, for moisture |
| Unsalted Butter 🧈 | 1 cup | Room temperature preferred |
| Large Eggs 🥚 | 2 whole | Room temperature |
| Vanilla Bean 🌿 | 1 whole | Scraped seeds only |
| Walnuts 🥜 | 1 ½ cups | Toasted, chopped |
| Ground Cinnamon 🌶️ | 1 tsp | Freshly ground preferred |
| Baking Soda 🧂 | ½ tsp | For leavening |
| Salt 🧂 | ½ tsp | Fine sea salt |
| Bourbon or Rum 🍷 | 1 tbsp | Optional for depth |
The bananas and walnuts are non-negotiable for that signature texture. Ripe bananas with black spots pack more sugar and flavor—don't skimp here. For walnuts, Costco or Trader Joe's have the best prices in bulk, but any grocery store's nut section works. Toast them yourself (350°F for 8-10 minutes) for maximum flavor—pre-toasted nuts lack that caramelized depth. The vanilla bean is where Martha's magic happens: split it lengthwise and scrape out the seeds. Williams Sonoma sells them pre-split if you're short on time, but it's worth the extra minute for the real thing.
No bourbon or rum? Almond extract at half the amount works in a pinch, though it lacks the boozy warmth. Substituting walnuts? Pecans or hazelnuts toasted work, but the flavor profile shifts slightly. For the flour, King Arthur or Bob's Red Mill brands are ideal—they're consistently high-quality. If you're gluten-free, swap for a 1:1 gluten-free flour blend, but expect a denser crumb. The baking soda must be fresh—if your container feels old, test it by mixing with vinegar (should bubble vigorously).
This cake keeps beautifully for 4-5 days at room temperature, wrapped tightly in foil. For longer storage, freeze the whole cake (unfrosted) for up to 3 months
Why You'll Love This Recipe
- You’re using pantry basics here: bananas you’d otherwise toss, flour you already own, and butter that stretches further than fancier recipes. The sugar isn’t even fancy granulated—just what you’d grab on a grocery run. And leftovers? They last for days without drying out.
- No Mash Required: I swear by this trick—just toss those ripe bananas with the wet ingredients until they break down naturally. No food processor, no sticky mess, and the batter still comes out light and fluffy. Honestly, it’s the kind of recipe that makes me actually want to bake.
- Warm Spice Magic: That combo of brown sugar and butter? It’s like a hug in cake form. The bananas add natural sweetness, but the toasted nuts (especially if you add walnuts or pecans) bring this thing to life. It’s the kind of flavor that makes you reach for seconds without even thinking.
- Breakfast or Dessert: Serve it warm with a drizzle of honey for a lazy Sunday brunch, or let it cool for a classic dessert. I’ve even packed slices in my kids’ lunches—yes, really—and they come back begging for more. It’s that good.
Step-by-step instructions for Martha Stewart's banana nut cake
Here's how to create a perfectly moist banana nut cake with Martha's signature vanilla bean technique.
Prepare the Wet Ingredients and Toast the Walnuts
Preheat your oven to 350°F and grease a 9-inch round cake pan or line it with parchment paper. In a medium bowl, mash the 3 whole ripe bananas until completely smooth—no lumps should remain. The texture should resemble thick pudding.
In a separate large bowl, cream together the 1 cup unsalted butter (room temperature) and both sugars—1.5 cups granulated sugar and 0.5 cup packed light brown sugar3-4 minutes. The mixture should become light and fluffy, nearly doubling in volume. This creaming process incorporates air, which helps create that signature tender crumb.
While the butter and sugar cream, toast the 1.5 cups walnuts in a dry skillet over medium heat for 5-6 minutes, stirring constantly until they're fragrant and golden brown. Immediately transfer them to a cutting board and roughly chop them with a chef's knife. The toasted walnuts will add rich nutty flavor and contrast the cake's soft texture.
Mix Dry Ingredients and Combine Wet and Dry
In a small bowl, whisk together the 2 cups all-purpose flour, 1 tsp ground cinnamon, 0.5 tsp baking soda, and 0.5 tsp salt. Sift the dry ingredients directly into the creamed butter mixture, mixing on low speed just until combined—about 30 seconds. Overmixing develops gluten, which can make the cake tough.
Add the mashed bananas to the wet mixture and mix on low speed for 1 minute until just incorporated. Then add the 2 whole large eggs, one at a time, mixing well after each addition. Scrape down the sides of the bowl with a spatula to ensure all ingredients are fully combined.
Here's the Martha Stewart secret: scrape the seeds from the 1 whole vanilla bean and add them to the batter along with the 1 tbsp bourbon or rum. The vanilla seeds add depth of flavor that you won't get from vanilla extract. Mix on low speed for another 30 seconds to fully incorporate the vanilla.
Fold in Walnuts and Bake to Golden Perfection
Gently fold in the toasted, chopped walnuts using a spatula, being careful not to overmix. The walnuts should be evenly distributed throughout the batter. Pour the batter into your prepared cake pan and smooth the top with a spatula.
Bake in the preheated oven for 45-50 minutes, or until a toothpick inserted in the center comes out clean. The cake should be golden brown on top and slightly pulled away from the edges of the pan. If you notice the edges browning too quickly, loosely cover the cake with aluminum foil after 30 minutes.
Real talk: your oven might run hot, so start checking for doneness at the 40-minute mark. The cake is done when it springs back gently when touched in the center. Let it cool in the pan for 15 minutes, then transfer to a wire rack to cool completely before serving.
Serve with Optional Glaze (Optional)
While the cake cools, you can make a simple glaze by whisking together ½ cup powdered sugar and 2-3 tablespoons milk or cream until smooth. Drizzle this over the cooled cake just before serving for extra moisture and sweetness. The cake is delicious on its own, but the glaze adds that bakery-style finish.
This cake keeps well at room temperature for 2-3 days or can be refrigerated for up to 5 days. The walnuts stay crisp, the banana flavor deepens, and the texture remains moist. For best results, serve a slice warm with a dollop of whipped cream or a scoop of vanilla ice cream.
Pro Tips For Making Banana Nut Cake Recipe Martha Stewart
- Mash Bananas Thoroughly: I learned this the hard way—lumpy banana puree means a cake with uneven texture and pockets of undercooked batter. Use a fork first, then press through a fine-mesh sieve if you’re impatient (yes, even if you’re in a hurry). The smoother the mash, the more tender the crumb.
- Brown the Butter First: This isn’t the prettiest method, but it’s the tastiest. Melt the butter, then cook it over medium-low heat until it turns golden and smells nutty—about 5-7 minutes. Let it cool slightly before mixing into the batter, or you’ll scramble the eggs. Trust me, the flavor difference is worth the extra effort.
- Don’t Overmix the Batter: I skip this when I’m lazy, but the dish is noticeably better when I don’t. Once the dry ingredients and wet ingredients come together, mix just until combined—about 20 strokes with a spatula. Overmixing develops gluten, which turns your cake dense instead of light and moist. Stop when there are a few flour streaks left.
- Check Doneness with a Toothpick: The cake’s done when the toothpick comes out with a few moist crumbs, not wet batter. Martha Stewart’s recipe can vary slightly depending on your oven, so start checking at 45 minutes. If the top browns too fast, tent it with foil early—uneven baking is the last thing you want in a banana nut cake.
Common mistakes when making perfect results
Overmixing the Batter
I've seen this happen more times than I can count—especially when we're eager to get the cake in the oven. But overmixing the batter after adding the dry ingredients develops gluten, which can make your cake tough instead of tender. Martha's method calls for mixing the dry ingredients in just until combined, about 30 seconds on low speed. The moment you see streaks of flour disappear, stop mixing. The same goes for folding in the walnuts—gentle is key here. 💫
Using Underripe Bananas
This is a rookie mistake that completely changes the texture and flavor of the cake. The bananas need to be ripe with black spots—those spots are packed with natural sugars that create that moist, tender crumb. Underripe bananas will make your cake dense and bland. I keep a bowl of bananas on my counter and grab the spottiest ones for this recipe. If you're in a pinch, you can speed up ripening by placing them in a paper bag with an apple overnight.
Skipping the Walnut Toast
Pre-toasted walnuts from the store just don't compare to freshly toasted ones in this cake. The toasting process enhances their natural oils and brings out their rich, caramelized flavor. When you skip this step, the walnuts stay bland and can even become soggy in the moist cake batter. Toast them yourself in a dry skillet over medium heat for 5-6 minutes, stirring constantly until fragrant and golden. Trust me, your taste buds will thank you. 🥜
Not Scraping the Vanilla Bean
This is where Martha's magic really shines. Using vanilla extract is fine, but scraping the seeds from a whole vanilla bean adds an incredible depth of flavor that extract just can't match. The seeds contain compounds that give the cake a complex, aromatic quality. If you're using a store-bought vanilla bean that's already split, you're halfway there. Just scrape out those little black seeds and add them directly to the batter. It's worth the extra minute of effort.
Opening the Oven Too Soon
Patience is key when baking this cake. Opening the oven door too early can cause the cake to sink or develop a dome. Wait until the 40-minute mark before checking for doneness. When you do check, insert a toothpick into the center—it should come out clean or with just a few moist crumbs. If the edges are browning too quickly, loosely cover the cake with aluminum foil after 30 minutes to prevent over-browning while allowing the center to cook through.
Ignoring Room Temperature Ingredients
The butter, eggs, and bananas should all be at room temperature before mixing. Cold butter won't cream properly, leading to a dense cake, while cold eggs can create air pockets that collapse during baking. Take the butter out of the fridge 1 hour before baking and let the eggs sit in warm water for 5 minutes to bring them to room temperature. For the bananas, simply leave them on the counter for 30 minutes before mashing. These small steps make a big difference in the final texture. 💡
Nutrition facts
Frequently asked questions
Can I substitute pecans for walnuts in this recipe?
Yes, you can use pecans as a 1:1 substitute! Toast them in the same way (350°F for 5-6 minutes) and chop them finely. Pecans have a slightly sweeter, buttery flavor that works beautifully, though the texture will be slightly softer than walnuts. For extra richness, try a mix of both nuts.
How do I make this cake gluten-free?
Replace the all-purpose flour with a 1:1 gluten-free baking flour blend (like Bob's Red Mill or King Arthur). You may need to add ½ tsp xanthan gum to the dry ingredients to improve texture. Keep in mind the cake will be slightly denser than the original, but still delicious. Test your blend first—some require extra liquid.
Why does my cake sink in the middle?
This usually happens from opening the oven too soon or underbaking. Wait until 40 minutes before checking, and bake until a toothpick comes out clean. If your oven runs hot, cover the cake loosely with foil after 30 minutes to prevent over-browning. Also ensure your butter and eggs are at room temperature—cold ingredients can cause uneven baking.
Can I make this cake in a different pan shape?
Yes, but adjust the baking time. For a 9x13-inch pan, bake at 350°F for 30-35 minutes (cover with foil if browning too quickly). For 8-inch round pans, increase baking time by 5-10 minutes. Always check with a toothpick. The cake will spread more in rectangular pans, so don't overfill them.
How can I add extra moisture to the cake?
For an even moister cake, try these tips: Add 1 tbsp sour cream or Greek yogurt to the batter, or replace 2 tbsp milk with 2 tbsp orange juice for brightness. You can also brush the cooled cake with 2 tbsp simple syrup (equal parts sugar and water, heated until dissolved) before serving. The walnuts will stay crisp while the cake stays ultra-tender.