This banana cake is genuinely exceptional — not banana bread or a quick one‑bowl loaf, but a proper, moist cake warmly spiced and built on a foundation of nutty browned butter most recipes skip. The frosting is a salted caramel buttercream that tastes like you spent the afternoon in a candy shop. It happens to be gluten free without sacrificing texture or flavor.
Below I’ll explain what makes this version different and why each step matters. If you enjoy gluten free desserts, try the Gluten Free Tiramisu for another refined treat.
Why This Recipe Works (And What Sets It Apart)
Many banana cake recipes are serviceable: mashed bananas, butter, flour, cream cheese frosting. This recipe builds on that baseline with three key upgrades that noticeably improve flavor and texture.
Browned butter instead of plain melted butter. Browning butter adds about five extra minutes but gives a deep, nutty, toffee‑like note that complements ripe bananas the way caramel complements apples. It’s the single biggest flavor upgrade.
Coconut sugar instead of white sugar. Coconut sugar brings a natural caramel‑like, molasses‑adjacent depth. Light brown sugar will give a similar result, but coconut sugar is ideal if you have it.
Salted caramel buttercream instead of cream cheese frosting. Cream cheese is classic and delicious, but salted caramel buttercream is bolder and more interesting here. The salt balances sweetness and the caramel echoes the browned butter for a cohesive flavor profile.
The outcome is a gluten free banana cake that tastes like it came from a bakery that pays attention to details.
Ingredients
- 2 sticks unsalted butter, browned
- 1 ½ cups coconut sugar, or light brown sugar
- 1 cup milk of choice
- 2 eggs
- 1 ½ cups mashed ripe bananas
- 1 tsp vanilla extract
- 2 cups gluten free flour (see note)
- 1 tsp baking soda
- 1 tsp cinnamon
Frosting
- 1 ½ sticks unsalted butter, room temperature
- 2 ½ cups powdered sugar
- ½ cup caramel sauce
- ½ tsp flaky sea salt
Step-by-Step Instructions
- Preheat the oven to 350°F (175°C). Line a 9‑inch square pan with parchment paper.
- In a large bowl combine the browned butter, coconut sugar, milk, eggs, mashed bananas, and vanilla. Stir until smooth.
- Add the gluten free flour, baking soda, and cinnamon. Stir until just combined; avoid overmixing.
- Pour the batter into the prepared pan and bake 35–38 minutes, or until a toothpick inserted in the center comes out with a few moist crumbs.
- Remove from the oven and let the cake cool completely, at least 4 hours.
- To make the frosting, beat the room‑temperature butter with an electric mixer until creamy, about 2 minutes. Gradually add powdered sugar and beat until combined.
- Add the caramel sauce and flaky sea salt, then beat until smooth and spreadable.
- Spread the frosting over the cooled cake, slice, and serve.
Pro Tips for the Best Banana Cake
Use Very Ripe Bananas
Choose bananas that are heavily spotted or mostly brown. They have the most sugar, moisture, and concentrated banana flavor. If needed, ripen them quickly in a paper bag for a day or two.
Don’t Skip the Browning Step
If pressed for time you can use melted butter, but browned butter adds a distinctive flavor that elevates the cake. It only takes a few minutes and is worth the effort.
Don’t Overbake
Gluten free cakes can dry out quickly. Start checking at 33 minutes. The toothpick should show a few moist crumbs — not raw batter or completely dry cake. The cake firms as it cools.
Cool Before Frosting
Cool at least 4 hours, or bake the day before and frost the next day. The banana flavor deepens with resting time.
Use a 1:1 Gluten Free Flour Blend
A 1:1 blend formulated to replace all‑purpose flour gives the most reliable texture. Avoid single‑ingredient flours unless you adjust the recipe for their different absorption rates.
Check Your Baking Soda
If baking soda has been open for more than six months, test it by adding a pinch to hot water — it should fizz immediately. Replace it if it doesn’t.
Variations and Substitutions
Not Gluten Free?
Swap the gluten free flour 1:1 for all‑purpose flour for a slightly more traditional crumb.
Dairy Free?
Use a plant‑based butter and non‑dairy milk. Make sure any caramel sauce used in the frosting is dairy free.
Swap the Frosting
Classic cream cheese frosting or a chocolate ganache both pair beautifully with banana cake.
Add Mix‑Ins
Fold in ½ cup mini chocolate chips, chopped walnuts, or pecans for extra texture and flavor.
Make It a Layer Cake
Divide batter between two 9‑inch round pans and bake 25–30 minutes. Consider increasing the frosting by 1.5× for filling and topping.
Make It Into Cupcakes
Fill standard liners ¾ full and bake at 350°F for 18–22 minutes. Yields about 18 cupcakes.
Storage and Make-Ahead Tips
| Method | How Long | Tips |
| Room temperature (unfrosted) | Up to 2 days | Cover tightly or store in an airtight container. |
| Room temperature (frosted) | Up to 2 days | Cover loosely to avoid disturbing the frosting. |
| Refrigerator (frosted) | Up to 5 days | Bring to room temperature about 30 minutes before serving. |
| Freezer (unfrosted) | Up to 3 months | Wrap slices in plastic wrap then foil; thaw overnight in the refrigerator. |
How This Recipe Compares to Popular Banana Cake Recipes
A quick comparison highlights what makes this version standout: it’s built gluten free, uses browned butter, swaps coconut sugar for white sugar, and features a salted caramel buttercream instead of the standard cream cheese frosting.
Frequently Asked Questions
Yes. Frozen then thawed bananas are often sweeter and more flavorful because freezing breaks down cell walls and concentrates sugars. Thaw fully and drain any excess liquid before mashing and measuring.
Common causes include using a non 1:1 gluten free flour, overmixing after adding flour, underripe bananas, or underbaking. Gluten free baking is sensitive to flour choice — use a blend formulated to replace all‑purpose flour.
Egg replacements weren’t tested in this recipe. As a guideline, one flax egg (1 tbsp ground flaxseed + 3 tbsp water, rested 5 minutes) can work, though the cake may be slightly denser.
Use a 1:1 gluten free baking blend designed to substitute for all‑purpose flour. These blends give the most reliable texture; single‑ingredient flours will change absorption and structure.
No. Banana bread is a quick bread, denser and typically baked in a loaf pan. Banana cake is lighter, intended to be frosted and served as a dessert. This recipe is a cake — tender crumb, frosting, and a sweeter profile suited to dessert.
You May Also Like
- Banana Upside Down Cake
- Carrot Cake Banana Bread
- Banana Bread Brookies
- Banana Upside Down Peanut Butter Bars
- Banana Blondies
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Get the Recipe:
Banana Cake
- 2 sticks unsalted butter, browned
- 1 ½ cups coconut sugar, or light brown sugar
- 1 cup milk of choice
- 2 eggs
- 1 ½ cups mashed ripe bananas
- 1 tsp vanilla extract
- 2 cups gluten free flour (see note)
- 1 tsp baking soda
- 1 tsp cinnamon
Frosting
- 1 ½ sticks unsalted butter, room temperature
- 2 ½ cups powdered sugar
- ½ cup caramel sauce
- ½ tsp flaky sea salt
Instructions
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Preheat oven to 350°F and line a 9‑inch square pan with parchment.
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Combine browned butter, coconut sugar, milk, eggs, mashed bananas, and vanilla in a large bowl.
-
Stir in gluten free flour, baking soda, and cinnamon until just combined.
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Pour into the prepared pan and bake 35–38 minutes, until a toothpick comes out with a few moist crumbs.
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Cool completely, at least 4 hours.
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Beat butter until creamy, add powdered sugar, then mix in caramel and flaky sea salt until smooth.
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Spread frosting over the cooled cake, slice, and enjoy.
Notes
- If not gluten free, substitute all‑purpose flour 1:1.
- Melted butter works in a pinch, but browned butter adds notable depth.
- Use heavily spotted, ripe bananas for best flavor.
- Do not overbake; check early to avoid drying.
- Allow the cake to cool fully before frosting.