I still remember the look on Alex's face the first time I set this banana walnut cream cake on the table. His eyes went wide, and he said, "Mom, this looks like something from a bakery." Honestly? That made my whole week.
Jump to:
- Why You Will Like This Recipe
- Ingredients For Banana Walnut Cream Cake
- How To Make This Banana Walnut Cream Cake Step By Step
- Storage and Reheating
- Fun Variations To Try With Banana Walnut Cream Cake
- Frequently Asked Questions About Banana Walnut Cream Cake
- Recipes You May Like
- Time To Bake This Banana Walnut Cream Cake
- Banana Walnut Cream Cake
This cake started as a happy accident. I had three overripe bananas sitting on the counter, a bag of walnuts I bought for another recipe, and leftover custard from a weekend project. I thought, why not throw it all together? And wow, I'm so glad I did. The result was this soft, moist banana cake layered with creamy custard and crunchy walnuts that my whole family went crazy for.
It's the kind of cake that feels fancy but is actually really simple to pull off. You don't need special equipment or hard to find ingredients. Just a mixing bowl, two round pans, and about 50 minutes of your time. If you love banana based desserts, you should also try my cottage cheese lava cake for another easy treat that tastes way more special than the effort you put in.
Why You Will Like This Recipe
- Simple ingredients you probably already have in your pantry right now
- Ready in under an hour from start to finish, including baking time
- Soft and moist thanks to ripe bananas and sour cream in the batter
- That crunch factor from toasted walnuts and white chocolate chips in every bite
- Kid approved because both Alex and Sarah ask for this on repeat
- Great for gatherings since it looks impressive without the stress
Ingredients For Banana Walnut Cream Cake
For the cake:
- 2 cups all purpose flour
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ cup sour cream
- 3 ripe bananas, mashed
- ½ cup chopped walnuts
- ½ cup white chocolate chips
For the assembly:
- 2 cups creamy custard (homemade or store bought)
- 1 banana, sliced
- ¼ cup walnuts for garnish
Quick substitution notes: You can swap sour cream for Greek yogurt and it works just as well. If someone in your family has a nut allergy, pecans or even toasted coconut flakes are great in place of walnuts.

How To Make This Banana Walnut Cream Cake Step By Step
Prep Your Pans and Oven
Preheat your oven to 350°F. Grease two 8 inch round cake pans and line the bottoms with parchment paper. This step matters because it keeps the cake from sticking, and trust me, I learned that the hard way my first time around.
Mix the Dry Ingredients
In a medium bowl, whisk together the flour, baking soda, and salt. Set this aside for now. I like having everything measured out before I start mixing because it keeps things moving fast.
Cream the Butter and Sugar
In a large bowl, beat the softened butter and sugar together until light and fluffy. This usually takes about 3 minutes with a hand mixer. Don't rush this step because it's what gives the cake that airy, soft texture.
Add the Wet Ingredients
Beat in the eggs one at a time. Then add the vanilla extract, mashed bananas, and sour cream. Mix until everything is just combined. It might look a little lumpy from the bananas, and that's totally fine.
Bring It All Together
Gradually fold in the dry mixture. Don't overmix here because that's the number one reason cakes turn out dense and tough. Once the flour just disappears, stir in the chopped walnuts and white chocolate chips by hand.
Bake Until Golden
Divide the batter evenly between your two prepared pans. Bake for 30 to 35 minutes or until a toothpick inserted in the center comes out clean. I always start checking at 28 minutes because every oven is a little different.
Cool and Assemble
Let the cakes cool in the pans for about 10 minutes, then flip them onto a wire rack to cool completely. Once cooled, place one layer on your serving plate. Spread half the custard on top. Add the second cake layer and spread the remaining custard over it. Top with banana slices and a sprinkle of walnuts.
Pop it in the fridge for at least 30 minutes before serving. This lets everything set and the flavors come together beautifully.

Storage and Reheating
Store any leftover banana walnut cream cake in an airtight container in the fridge. It keeps well for up to 4 days, and honestly, I think it tastes even better the next day because the custard soaks into the cake layers overnight.
If you want to make it ahead, you can bake the cake layers and freeze them unfrosted for up to 2 months. Just wrap each layer tightly in plastic wrap and then in foil. When you're ready, thaw them in the fridge overnight and assemble with fresh custard.
I wouldn't recommend freezing the assembled cake since the custard and banana slices don't hold up great after thawing.
Fun Variations To Try With Banana Walnut Cream Cake
Here are some twists I've tried that my family loved:
- Chocolate lovers version: Add 2 tablespoons of cocoa powder to the batter and use chocolate custard instead. Sarah went absolutely wild for this one.
- Tropical twist: Toss in some shredded coconut and swap the walnuts for macadamia nuts. It gives the whole cake a totally different vibe.
- Cream cheese frosting: Skip the custard layer and use a thick cream cheese frosting instead. Donald actually prefers this version with his morning coffee on weekends.
- Caramel drizzle: A little drizzle of salted caramel on top takes this from great to absolutely amazing.
Have you ever tried adding a pinch of cinnamon to banana cake batter? It adds this warm, cozy flavor that pairs so well with the walnuts. I started doing it last fall and now I can't go back.
One thing to watch out for: make sure your bananas are really ripe with lots of brown spots. Green or barely yellow bananas won't give you that deep, sweet banana flavor you want.
Frequently Asked Questions About Banana Walnut Cream Cake
Can I Make Banana Walnut Cream Cake Ahead Of Time?
Yes, and I actually recommend it! The cake layers can be baked a day or two in advance and stored wrapped tightly at room temperature. You can also freeze the unfrosted layers for up to 2 months. Just assemble with custard and fresh banana slices the day you plan to serve it. I do this for holidays all the time and it saves so much stress.
How Do I Keep Banana Walnut Cream Cake Moist And Fluffy?
The key is ripe bananas and sour cream. Both add tons of moisture to the batter. Also, don't overmix once you add the flour because that develops too much gluten and makes things tough. I pull the cakes out of the oven the moment the toothpick comes out clean instead of waiting longer. Those extra few minutes can dry everything out fast.
Can I Freeze This Banana Walnut Cream Cake?
You can freeze the cake layers before assembling. Wrap each one in plastic wrap and then aluminum foil. They'll keep for about 2 months in the freezer. I wouldn't freeze the finished cake with custard and banana slices though, because the texture changes once it thaws. Better to freeze just the baked layers and assemble fresh when you need it.
What Can I Use Instead Of Walnuts In Banana Cream Cake?
Pecans are my go to swap because they have a similar buttery crunch. Almonds work too if you toast them first. For a nut free version, try toasted coconut flakes or even crushed graham crackers for that crunchy contrast. Alex's friend has a tree nut allergy, so I've made this with sunflower seeds before and it turned out really good.
Recipes You May Like
- Fluffy Banana Pancakes for a Perfect Weekend Breakfast because if you love banana treats, these pancakes are another family hit
- Moist Cottage Cheese Banana Bread for a simpler baked treat that uses up those ripe bananas
- Creamy Croissant Bread Pudding for another custard based dessert that's pure comfort food
Time To Bake This Banana Walnut Cream Cake
This banana walnut cream cake has become one of those recipes I come back to again and again. It's simple enough for a regular weeknight treat but pretty enough to bring to a dinner party or holiday table. The soft banana cake, the creamy custard, and those crunchy walnuts on top just work together so well.
I love that it uses real ingredients and comes together without any fuss. No fancy piping skills needed, no complicated steps. Just good, homemade cake made with love.
Give it a try this weekend and let me know how it turns out for your family. I bet your kids will be asking for seconds before they even finish the first slice. Don't forget to save this to Pinterest so you can find it again when those bananas start getting spotty!
Print
Banana Walnut Cream Cake
- Total Time: 1 hour 25 minutes
- Yield: 10 servings 1x
Description
A soft and moist banana cake layered with creamy custard and crunchy toasted walnuts. This banana walnut cream cake feels fancy but is actually really simple to pull off with ingredients you probably already have in your pantry.
Ingredients
- 2 cups all purpose flour
- 1 teaspoon baking soda
- ½ teaspoon salt
- ½ cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs
- 1 teaspoon vanilla extract
- ½ cup sour cream
- 3 ripe bananas, mashed
- ½ cup chopped walnuts
- ½ cup white chocolate chips
- 2 cups creamy custard (homemade or store bought)
- 1 banana, sliced
- ¼ cup walnuts for garnish
Instructions
- Preheat your oven to 350°F. Grease two 8 inch round cake pans and line the bottoms with parchment paper.
- In a medium bowl, whisk together the flour, baking soda, and salt. Set aside.
- In a large bowl, beat the softened butter and sugar together until light and fluffy, about 3 minutes with a hand mixer.
- Beat in the eggs one at a time. Then add the vanilla extract, mashed bananas, and sour cream. Mix until just combined.
- Gradually fold in the dry mixture. Don't overmix. Once the flour just disappears, stir in the chopped walnuts and white chocolate chips by hand.
- Divide the batter evenly between the two prepared pans.
- Bake for 30 to 35 minutes or until a toothpick inserted in the center comes out clean.
- Let the cakes cool in the pans for about 10 minutes, then flip them onto a wire rack to cool completely.
- Place one layer on your serving plate. Spread half the custard on top. Add the second cake layer and spread the remaining custard over it.
- Top with banana slices and a sprinkle of walnuts.
- Pop it in the fridge for at least 30 minutes before serving to let everything set.
Notes
Make sure your bananas are really ripe with lots of brown spots for the best deep sweet banana flavor. You can swap sour cream for Greek yogurt and it works just as well. If someone has a nut allergy, pecans, toasted coconut flakes, or sunflower seeds are great in place of walnuts. The cake layers can be baked ahead and frozen unfrosted for up to 2 months.
- Prep Time: 20 minutes
- Cook Time: 35 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American





