This Banana Poppy Seed Cake with Vanilla Bean Frosting is a moist one bowl banana snack cake that pleases everybody, from the pretty crunch of the poppy seeds to the creamy vanilla buttercream, it’s a joy to make, and eat!
That handful of everyday ingredients pulls together to make a really special cake…I’m not sure if it’s the extra ripe bananas, the poppy seeds, the sour cream in the batter, or that frosting with a virtual galaxy of vanilla bean specs. But in the end, does it really matter? This cake is perfect, that’s all we need to care about, right?
Vanilla beans are expensive, but you can also use vanilla bean paste, which is one of my favorite new discoveries. It gives you that same flavor and beautiful specs at a much lower cost. The heavy vanilla presence in this frosting really makes a difference, and extract just doesn’t cut it.
Of course you could double the recipe and made a grand layer cake, but I like it this way, it’s more approachable, more snackable. And I could never eat a layer cake for breakfast ;)
I know this is going to become your favorite…
‘Nuf said.
In case you haven’t noticed, I’ve got more great banana cakes on the blog~
BANANA CAKE WITH SPICED VANILLA BUTTERCREAM
BANANA CAKE WITH NUTELLA BUTTERCREAM
BANANA WALNUT CAKE WITH MOCHA BUTTERCREAM
BANANA WALNUT CAKE WITH CARAMEL FROSTING
Ingredients
- 2 Tbsp unsalted butter, at room temperature
- 2/3 cup sugar
- 1/2 cup sour cream
- 1 large egg
- 2 ripe bananas, mashed
- 1/2 cup poppy seeds
- 1 Tbsp vanilla extract
- 1 cup flour
- 1/4 teaspoon salt
- 1/2 teaspoon baking soda
- 3 to 4 ounces of cream cheese, at room temperature (about half the 8 oz package)
- 2 Tbsp unsalted butter, at room temperature
- the seeds from 1 vanilla bean
- 2 cups confectioner's sugar, sifted
- milk or cream for thinning the icing
- a squeeze of fresh lemon juice
Instructions
- Set oven to 350F
- Cream the butter, sugar and sour cream together. Beat in the egg, bananas and vanilla. (Make sure the bananas are completely mashed smooth first)
- Sift the flour, salt and baking soda into the wet mixture. Mix together just until thoroughly combined. Fold in the poppy seeds.
- Spread the batter into a greased 8x8 square baking pan. I lined mine parchment paper (or foil) so I could remove it easily for a neater presentation and cutting.
- Bake for about 25 minutes until a toothpick just comes out clean.
- Cool before frosting.
- To make the frosting--- mix everything together until you have a thick, creamy, spreadable consistency. Taste to adjust your lemon juice.
- Heap onto the completely cooled banana cake and swirl it around thickly.
Don’t forget to pin this Banana Poppy Seed Cake with Vanilla Buttercream
65 Comments
Sarah White
January 31, 2019 at 4:36 pmCan you bake this in a loaf pan? And if so would it be the same temp and time?
Sue
January 31, 2019 at 5:16 pmYou can convert it to a loaf pan, baking at the same temperature, but the loaf pan should take a little longer because it will be deeper.
Terry
July 10, 2018 at 11:00 amI have never used vanilla bean paste, about how much would you use in this recipe?
Sue
July 10, 2018 at 11:29 amI use it interchangeably with the extract, so in the same amount. If you love vanilla you will go crazy for the paste, Terry!
Granny Frannie
June 24, 2018 at 12:15 pmHi Sue ! I made muffins today and my husband said they are delicious ! I am wondering what the best way is to store muffins and all baked goods. I am not a fan of plastic. Have a beautiful Sunday !
Sue
June 24, 2018 at 12:18 pmThat’s a great question and one I’m always struggling with ~ I hate it when my baked goods get soggy or lose their beautiful texture after being stored. I usually loosely cover them in foil. If you have a glass cake dome that can work too.
Lisa
May 12, 2018 at 9:17 amDelicious cake! I only used half the amount of poppy seeds (1/4 cup) which was plenty! And I had a ton of icing leftover so now o need to make another cake!
Sue
May 12, 2018 at 9:19 amEverybody has their own special poppy seed limit, I love to go overboard with them, but 1/4 cup is plenty to get the effect, for sure! Glad you liked it Lisa.
Michelle
March 24, 2018 at 9:59 amHi! I made these as muffins and they were awesome. I cut the sugar in half, and no frosting. And I was out of eggs so used applesauce. What a great recipe, thanks!
Sue
March 24, 2018 at 10:01 amThat’s great to know Michelle, I didn’t realize this recipe was so versatile, love the appleasuce idea! I think I’d keep the frosting, though ;)
Michele
March 3, 2018 at 9:16 pmCan’t make this anymore! So horrible for my diet! Ate the entire thing :)
Debra
February 16, 2018 at 2:52 pm5 stars in my eyes. So moist n yummy. Really glad i tried this recipe. TY
Sue
February 16, 2018 at 3:18 pm:) I was just thinking about doing this recipe again and re-posting it as part of my Vintage View series ~
Tina Basu
May 3, 2017 at 11:32 amThis is delectable Sue. I like old fashioned cakes – i find them homely and wonderful!
Sue
May 3, 2017 at 11:48 amMe too, Tina!
Esther
March 13, 2017 at 8:27 pmMade this and my husband said it was a new favourite!!!! Love this cake! Thank you for sharing.
Sue
March 13, 2017 at 8:49 pmYay!! :)
jess
September 29, 2016 at 7:17 amThis looks delicious! Love anything with poppyseeds. can’t wait to try it out!
Allison
September 20, 2016 at 5:41 pmMy almost 7-year-old and I are excited to make this for her birthday cake, as a double layer with chocolate zucchini being the second layer! Would I need to double the recipe to make it into a 9×13″ cake? Has anyone had luck in doing so? What would the bake time be for that? Thanks!
Sue
September 20, 2016 at 6:12 pmWow, your 7 year old has a sophisticated palate!! I think you can double this recipe for the larger pan, but I’m not sure how much longer you’d need to bake it, you’ll have to pay close attention to that and check with a toothpick.
Melissa Becker
September 2, 2016 at 4:35 amCurious- What is the reliance of the “3” before the 4oz of cream cheese? You have “(about half the 8 oz package)” which would be 4 oz. The three would indicate you need a total of12 oz or you are trying to say 3/4?? Thank you. Btw, the banana poppyseed is in the oven as I type. Can’t wait to try!
Sue
September 2, 2016 at 7:27 amHey Melissa, I changed it to clarify, it’s 3 to 4 ounces. Hope you like it!
Justine
August 22, 2016 at 9:51 amBest banana cake ever omg? This recipe is a révélation! First time i used vanilla beans and its totaly worth it! Thanks à lot for creating my latest obsession ;)
Sue
August 22, 2016 at 10:40 amI’m so happy I could give you a new obsession, Justine :))) Not to be an enabler, or anything, but I have LOTS more great banana cake and bread recipes on the blog…
Adriann
May 2, 2016 at 8:46 amHi, this looks wonderful, and just what I’m looking for to send my mother for a more personal touch to her Mothers Day gift! However, this is the first time I’ve lived so far away, so I’ve never sent any food before, and it would be more than I could afford to overnight it. So my questions are; firstly, does it need to be refrigerated? And if not, would it last 2-3 days (in mostly cold temperatures) to make the trip? Any advice would be greatly appreciated, I’m having a bit of trouble with general searches on the matter. Thank you!
Sue
May 2, 2016 at 8:53 amThe problem is that this is a frosted cake, Adriann, and that’s never the best choice for shipping, unless you’ve got fabulous packaging and plan to ship it super quickly. In this case I really think cookies, or shortbread, would be a much better choice…sorry! I think it’s such a sweet idea!
Allison
May 2, 2016 at 5:56 amMmm this looks super tasty!
Amy
March 10, 2016 at 8:05 amhi! this looks delicious and would be perfect for my twins who celebrate their 4th birthday on Easter. I am just wondering if you have ever made cupcakes using this recipe? if so, what adjustments did you make, if any? thanks so much!
Sue
March 10, 2016 at 8:08 amI haven’t Amy. I’m sure you could, but it has the texture of a moist dense bread rather than a fluffy cake, if that makes sense. I think it would work, though, as long as you watch the cooking time.
Monique Galvan
February 25, 2016 at 9:08 amWhat other fruits could you use in place of bananas? Could you use blueberries or strawberries instead, and if so how many?
Sue
February 25, 2016 at 10:00 amWell, the banana is mashed, so I wouldn’t advise replacing it with those other fruits, Monique.
Bridget
September 30, 2015 at 7:52 amJust had to tell you, this is the best recipe. I use it as my “Go To” for banana bread. The cake is awesome! I just omit the frosting when I bake it in a loaf. Love it! I like that it has barely any butter or sugar. I was out of eggs but had a few whites left from another dish, turned out great. Thanks for the recipe. Super easy. I think I’ve made it 4 times since finding the recipe this month.
Sue
September 30, 2015 at 8:08 amI never thought of doing it that way, thanks Bridget!
Cheryl
June 30, 2015 at 7:53 pmHow much vanilla bean paste would you use to replace the seeds of 1 vanilla bean?
Sue
June 30, 2015 at 8:44 pmAbout a teaspoon, Cheryl.
Amanda
April 6, 2015 at 10:14 amDo you think I could use a 9inch round pan? Thanks!
Sue
April 6, 2015 at 10:22 amYes, sure, Amanda, just check it carefully as it’s baking.
Max
March 29, 2015 at 8:23 pmI know this is a crazy question on a cake recipe, two years after you posted it, but do you have any idea what removing the sugar would do to the cake? Ripe bananas are so sweet already, so it’s more the texture than the flavor that I’m concerned about. Thanks!
Sue
March 29, 2015 at 8:30 pmGosh, you’ve got me there, Max. I think that’s a baking ‘chemistry’ question, and I don’t know. But now you’ve got me interested and I’m going to research it!
Bonnie
October 23, 2014 at 12:55 amJust wondering if anyone has tried making this without the egg? (Egg allergy)
It seems like it could be made without, just not sure.
Sue
November 24, 2014 at 7:47 amYou could certainly try it, Bonnie, maybe use just a little more banana to replace it.
rhobley
June 4, 2015 at 7:51 pmYou can use flex seed meal for egg substitute. Look on the bag.
andy
January 18, 2014 at 7:10 amHi !
Wow, this cake look lovely !
How thick is the cake ? I made this today (using a different recipe) but the cake was only just over an inch thick :-(
Also, I am in England. Would it be possible for you to include Imperial measurements in your recipes ?
Thanks :-)
Sue
January 18, 2014 at 8:00 amThanks, Andy — this cake is about 2 – 2 1/2 inches, as I remember. I would very much like to include universal measurements in my recipes, at least for the basic ingredients like butter and flour. As for the other things, it would be pretty difficult to convert everything, but I like the idea and I’ll give it some thought!
Meg
January 30, 2013 at 4:50 pmThis cake was awesome! The only problem is that it’s kind of small! :) I am not a banana fan per se, but this was really addictive. The frosting and the cake were a perfect combo. So much so that I didn’t mind walking around with seeds in my teeth! I had a lot of extra frosting, so I’m making another one today. Your blog is one of the best. I literally want to make everything I see on here. Thanks for sharing!
SavoringTime in the Kitchen
January 13, 2013 at 4:10 pmMy gosh, that looks delicious! I’m rather excited to see my bananas get ripe now :)
grace
January 11, 2013 at 8:36 pmfinally, poppy seeds get to mingle with a fruit other than lemon! :)
From Beyond My Kitchen Window
January 11, 2013 at 10:52 amOh boy, what a simple cake. I can almost taste how good this one is. The frosting is what I would love to have a spoonful of.
Kitchen Belleicious
January 10, 2013 at 1:12 pmpoppy seed is one of my all time favorite breads- now you go making it beyond extraordinary by adding in banana! i love it- more importantly I love the icing on top! LOL!
Magnolia Verandah
January 10, 2013 at 2:06 amPoppy seed cake is one of my favourites – I usually make it with a lemon icing for bite (Maggie Beer has a great recipe). Must try with the banana and cream cheese – sounds great.
Heather Schmitt-Gonzalez
January 10, 2013 at 2:02 amAw yeah…this looks amazing. I think I’ve told you before that I’m a sucker for anything studded with poppyseeds – just gorgeous.
Erica
January 10, 2013 at 1:16 amIt looks beautiful!!!! I love banana cakes or breads and this recipe sounds delicious….I always have ripe bananas and always looking for different ways to use them. I am printing this one!Happy New Year!
shannon weber
January 9, 2013 at 11:32 pmi love unassuming cakes! obviously i trumpet the layer cake quite a bit, but truth be told, simple cakes like this are my most favorite. and i’m changing my status on facebook to “in a relationship” with your vanilla bean frosting. ooohhhhhh…
Amy @ Elephant Eats
January 9, 2013 at 7:34 pmThere’s something about anything with vanilla bean seeds in it that I seriously adore. I never think to put poppy seeds with anything other than lemon desserts, but this totally works! I want some!!!
Averie @ Averie Cooks
January 9, 2013 at 5:32 pmI have wanted to make that butteryum banana cake forever! It stalks me. Everywhere I go, I see it. And your version with poppyseeds would be a huge hit with my parents, they’re poppy seed lovers! I personally want that frosting :)
If you could guess what the cake would be like without the poppy seeds, is it everything the butteryum post and comments promise it to be? Like the most amazing banana cake ever? I love really dense cakes, more like cakes-as-breads and super moist. Just curious your thoughts on it!
Sue/the view from great island
January 9, 2013 at 7:33 pmThat’s so funny, I’ve been haunted by it forever too…why do you think that is? It’s such an unassuming little cake!
The cake was good for a couple of reasons, one, like I said, there is a lot of banana in it, more than in most breads and cakes, which I liked. Also, it’s super easy to whip up, which is nice. It is dense, and moist, but from the banana, not from butter or oil. I think the amazing part comes from the combo of the cake and the frosting, not the cake itself, if that makes any sense.
Patricia @ ButterYum
May 6, 2013 at 9:56 pmSo nice to know my humble little cake haunts people haunts and stalks people ;). It’s the craziest thing ever – my photo wasn’t even that great but people have gone completely gaga over that cake (it’s even on Foodgawker’s favorite – most gawked page). Love your addition of poppy seeds – I must give that a try. Take care!!
Tricia @ saving room for dessert
January 9, 2013 at 5:19 pmI can’t get the vision of that creamy icing out of my head! So pretty.
Sue/the view from great island
January 9, 2013 at 7:34 pmI did a few extra dips into it with the spoon…just for research purposes…
Inside a British Mum's Kitchen
January 9, 2013 at 5:16 pmOh my goodness it looks sensational – LOVE that creamy looking cream cheese frosting.
Mary x
Sue/the view from great island
January 9, 2013 at 7:35 pmI was on the fence about whether to make a cream cheese frosting, or just make a vanilla buttercream. I’m glad I went with the cream cheese because it gives a little bit of zip to the cake.
Mary Younkin
January 9, 2013 at 4:54 pmonce again, why won’t you be my neighbor?! This sounds perfect right now!
Sue/the view from great island
January 9, 2013 at 7:36 pmWe need to do a blogging retreat!
Kate
January 9, 2013 at 4:04 pmI love poppy seeds and there are always bananas around that are ready! Great idea, thanks.
Sue/the view from great island
January 9, 2013 at 7:37 pmIt seems like I’m throwing poppy seeds into everything these days, they are so pretty and I keep thinking, why not??