This post may contain affiliate links. As an Amazon Associate, I earn from qualifying purchases. Doing so allows me to create more unique content and recipes for you.
Indulge in this moist and delicious Keto Banana Cake with creamy cream cheese icing and crunchy walnuts. This two-layer low-carb dessert is perfect for any occasion and is sure to be a hit with everyone!
Join my newsletter and never miss a recipe!
🍌 Nostalgia in Every Bite: Keto Banana Cake with Cream Cheese Icing 🍰
When I was a teenager, summers were all about trips to the beach and indulgent little squares of banana cake from the corner market. Those delightful treats, made by Nemo's, were incredibly moist and topped with rich cream cheese frosting. I bought them nearly every day, savoring each bite while soaking up the sun. As I grew older, those cakes remained a sweet memory, though I occasionally treated myself to them.
Moving to Washington brought new adventures but also a sad realization—I couldn’t find those beloved banana cakes anywhere. Then I went keto, which I initially thought meant bananas were off-limits due to their high carb content. But I discovered that you could incorporate just enough banana to get that irresistible flavor without the high carb count.
I decided it was time to recreate those memory-inducing cakes with a low-carb twist. This Keto Banana Cake is a perfect blend of nostalgia and keto-friendly goodness. I chose to make it a layer cake to suit holidays and celebrations, given that I don't eat sweets as often now. When I finally served it, everyone loved it, which made me incredibly happy. There’s nothing better than creating desserts that keto and non-keto people can enjoy together!
🍽️✨ Don't forget to share your delightful creations with us on Instagram using #BobbisKozyKitchen for a chance to be featured in our newsletter! 📸
In This Post
🥘Keto Banana Cake Ingredients
These are the ingredients necessary to make Keto Banana Cake.
- King Arthur's Keto Wheat Flour - this flour has been a game changer for me when it comes to low-carb baking!
- Besti Monk Fruit and Allulose Crystalized Sweetener - this is the only sweetener I use and recommend it to everyone.
- Besti Monk Fruit and Allulose Powdered Sweetener - this is the perfect sweetener to use for frostings.
A detailed list with measurements and instructions can be found on the printable recipe card at the bottom of the page.
🔪Keto Banana Cake Instructions
This is a basic breakdown of the steps involved in making Keto Banana Cake. You will find the full directions in the recipe card at the bottom of the post.
Fold the bananas into the batter just until combined.
Pour the cake batter evenly into the prepared pans.
Remove the cakes from the oven and place on a cooling rack.
Carefully spread about 1/3 of the icing on the cake.
Helpful Hint: 💡 For an extra moist cake, make sure your bananas are very ripe. The riper the bananas, the more natural sweetness and banana flavor they will add to your cake.
🍽Equipment
This is the equipment you will need to make Keto Banana Cake.
- 8-inch cake pans
- stand mixer
- hand mixer
- measuring cups and spoons
- rubber spatula
- medium mixing bowl
- baking sheet
- wire cooling rack
- icing spatula
Storage
- Store the Cake: Place the fully assembled Keto Banana Cake in an airtight container Refrigerate for up to 5 days to keep it fresh.
- Storing Individual Slices: If you prefer, you can slice the cake and store individual pieces in airtight containers. This makes it easier to grab a slice when you want one.
💭Top tip
When toasting the walnuts, keep a close eye on them as they can go from perfectly toasted to burnt very quickly. Stir them occasionally and remove them from the oven as soon as they start to turn golden and become fragrant. This will give your cake an added layer of crunch and flavor.
FAQ about Keto Banana Cake
If you don’t have sour cream, you can substitute it with full-fat Greek yogurt or even mascarpone cheese. Both will provide the creamy texture and slight tang needed for the cake.
The cake is done when a toothpick inserted into the center comes out clean or with just a few crumbs. The top should be golden brown, and the edges should start to pull away from the sides of the pan.
Absolutely! Chopped walnuts or pecans make a great addition to this banana cake. Fold in about 1/2 cup of nuts or your favorite mix-ins just before pouring the batter into the pans.
Related Recipes
Looking for other recipes like this? Try these:
- Keto Christmas Spice Cake
- Keto Lemon Cake with Blackberry Frosting (Gluten-Free)
- Keto Eggnog Pound Cake
- Keto Banana Pudding Cheesecake
- Keto Ding Dong Cake
- Keto Birthday Cake
Keto Banana Cake
Equipment
Ingredients
For the Cake
- 1/2 cup unsalted butter softened
- 1/4 cup coconut oil melted
- 2 1/4 cup Besti Monk fruit and Allulose Sweetener
- 2 tsp lemon juice
- 1 1/2 cup sour cream
- 3 eggs
- 2 tsp real vanilla extract
- 1/2 tsp pink salt
- 2 tsp ground cinnamon
- 2 tsp baking soda
- 3 cups King Arthur's keto wheat flour
- 3 very ripe bananas well mashed (1 1/2 cups)
For the Cream Cheese Icing
- 1/2 cup unsalted butter softened
- 8 ounces cream cheese softened
- 1 tsp real vanilla extract
- 1/4 tsp pink salt
- 3 cups Besti Monk Fruit and Allulose Powdered Sweetener
For the Garnish
- 1/2 cup walnuts
- 1 tbsp avocado oil
- 1/2 tsp pink salt
Instructions
To make the Cake
- Preheat oven to 350 degrees F.
- Grease and flour 2 8" cake pans.
- Using a hand mixer or your stand mixer, combine the butter, oil, and sweetener. Mix thoroughly.
- Next, add eggs one at a time and mix just until combined.
- Add vanilla, salt, lemon juice, and sour cream. Mix well. Scrape the edges and bottom of the bowl to make sure everything is well combined.
- Add baking soda and flour. Mix just until combined.
- Then, fold in the bananas just until combined.
- Pour the cake batter evenly into the prepared pans (do not fill more than 2/3 full).
- Bake at 350 degrees for 25-35 minutes or until a toothpick comes out clean.
- Remove from the oven and place on a cooling rack.
To make the Cream Cheese Icing
- In a medium-sized mixing bowl, add the softened butter and softened cream cheese. Beat for 2 minutes until smooth.
- Add the vanilla and mix until blended.
- Then, add powdered sweetener and a pinch of salt and beat until smooth.
To make the Garnish
- Line a rimmed baking sheet with parchment paper or foil for easy cleanup.
- Toss walnuts in oil and salt if desired. Arrange in a single layer on the prepared baking sheet.
- Toast until browned and fragrant, stirring occasionally, about 7 to 10 minutes.
- Remove from oven and roughly chop (optional) when cool.
To assemble the Cake
- Once the cake is cool run a knife around the edge of the cake pans and carefully tip the cakes out onto a cutting board or a clean counter.
- Place one layer on a cake stand.
- With a sharp knife remove the top of the layer if it is not flat.
- Carefully spread about 1/3 of the icing on the cake.
- Top with the remaining layer.
- Frost the cake with the remaining icing.
- Top with the walnuts.
Disclaimer
Most of my recipes are low-carb (or keto) and gluten-free, but some are not. Please verify that a recipe fits your needs before using it. Recommended and linked products are not guaranteed to be gluten-free. Recipes may contain errors, so please use your common sense when following them. Nutritional information is provided as a courtesy and is approximate only. We cannot guarantee the accuracy of the nutritional information given for any recipe on this site. Erythritol carbs will not be included as it has a glycemic index of 0 (meaning it does not spike blood sugar) and it’s not metabolized. Net carbs are the total carbs minus fiber.
Nutrition
Food safety
- Do not use the same utensils on cooked food, that previously touched raw meat
- Wash hands after touching raw meat
- Don't leave food sitting out at room temperature for extended periods
- Never leave cooking food unattended
- Use oils with a high smoking point to avoid harmful compounds
- Always have good ventilation when using a gas stove
See more guidelines at USDA.gov.
If you like this recipe please leave a comment!
If you make this recipe, take a photo and share it on Instagram with the hashtag #BobbisKozyKtchn I love to see what you make. You might even make it into our newsletter!!
Thank you for reading and supporting the companies I partner with. Doing so allows me to create more unique content and recipes for you.
Lana
Hello, I love using this flour and looking forward to making the cake but I don’t see how the lemon juice is used. Did I miss it in the instruction's?
bobbiskozykitchen
Isn't this flour wonderful? I added the lemon juice to the instructions, thanks for letting me know I missed that step!
Lana
The cake is wonderful, thank you! Your Keto Christmas Spice cake is next on my list. Any plans to develop a scone recipe using the keto flour? I haven’t been able to convert an existing recipe.
bobbiskozykitchen
I am so happy that you enjoyed the cake! I have been wanting to work on a scone recipe, I have just had a few health issues that have caused a pause on some of my plans but I will get on it soon I promise!
Lana
Hope you get well soon. Thank you again for publishing recipes using the flour.