Banana Coconut Sheet Cake
There’s nothing better than a simple homemade cake that feels relaxed enough for a casual afternoon coffee but still looks beautiful sitting on the table for a gathering. This Banana Coconut Sheet Cake combines soft mashed bananas, rich cream cheese frosting, and toasted coconut into one easy dessert that works for birthdays, brunches, potlucks, Easter, Mother’s Day, summer cookouts, or just a weekend baking project at home.
The cake itself is incredibly moist thanks to ripe bananas, butter, oil, and buttermilk. Shredded coconut is folded into the batter for texture, while the toasted coconut on top adds a lightly crisp finish that balances the creamy frosting perfectly. It bakes in a 9×13-inch pan, making it ideal for serving a crowd without needing layers or complicated decorating.
If you love banana bread but want something a little more dessert-forward, this banana coconut sheet cake is the perfect recipe to keep on repeat.
Why You’ll Love This Banana Coconut Sheet Cake
This cake has the comforting flavor of homemade banana bread with the soft texture of a bakery-style sheet cake. The coconut brings a subtle tropical flavor that pairs naturally with ripe bananas without overpowering them.
A few reasons this recipe works so well:
- Uses simple pantry ingredients
- Great way to use overripe bananas
- Easy 9×13 sheet cake format
- Soft, fluffy texture with a rich crumb
- Cream cheese frosting balances the sweetness
- Toasted coconut adds texture and flavor
- Perfect for parties, holidays, and casual gatherings
Because the cake stays moist for several days, it’s also an excellent make-ahead dessert for entertaining.
The Secret to Moist Banana Cake
The key to getting the best texture in banana cake comes down to moisture balance. This recipe uses several ingredients together to create a soft cake that stays tender even after refrigeration.
Very Ripe Bananas
The darker the bananas, the better the flavor. Overripe bananas provide natural sweetness and moisture while creating that classic banana flavor throughout the cake.
Look for bananas with:
- Brown spots
- Soft texture
- Deep yellow peel
- Sweet aroma
Avoid bananas that are still firm or slightly green, since they won’t mash smoothly or provide enough sweetness.
Why This Recipe Uses Both Butter and Oil
Using both butter and oil gives the cake the best of both worlds.
Butter adds:
- Rich flavor
- Classic homemade taste
- Better structure
Oil helps:
- Keep the cake soft
- Prevent dryness
- Maintain moisture for days
You can use vegetable oil for a neutral flavor or melted coconut oil for extra coconut richness.
Toasted Coconut Makes a Big Difference
Toasting the coconut before adding it to the finished cake completely changes the flavor. Instead of tasting soft and overly sweet, toasted coconut becomes nuttier and slightly crisp.
It also adds beautiful golden color to the top of the cake.
When toasting coconut:
- Stir it often
- Watch carefully near the end
- Remove once golden brown
- Let cool fully before using
Coconut can burn quickly, so keeping an eye on it during baking is important.
Tips for the Best Cream Cheese Frosting
Cream cheese frosting is the perfect match for banana cake because it balances the sweetness while adding richness.
For smooth frosting:
- Use fully softened cream cheese
- Let butter come to room temperature
- Add powdered sugar gradually
- Beat until light and fluffy
If the frosting feels too thick, add a small splash of heavy cream or milk. If it becomes too soft, chill it for a few minutes before spreading.
Ingredients You’ll Need
For the Banana Coconut Cake
- All-purpose flour
- Baking soda
- Baking powder
- Salt
- Unsalted butter
- Vegetable oil or melted coconut oil
- Granulated sugar
- Light brown sugar
- Eggs
- Very ripe bananas
- Vanilla extract
- Coconut extract
- Buttermilk
- Sweetened shredded coconut
For the Cream Cheese Frosting
- Cream cheese
- Unsalted butter
- Powdered sugar
- Vanilla extract
- Heavy cream or milk
- Toasted coconut
How to Make Banana Coconut Sheet Cake
Step 1: Prepare the Pan and Toast the Coconut
Start by preheating the oven to 350°F and greasing a 9×13-inch baking pan.
Spread the coconut for the topping onto a baking sheet and toast until golden brown. Set it aside to cool while preparing the batter.
Step 2: Mix the Dry Ingredients
In a medium bowl, whisk together:
- Flour
- Baking soda
- Baking powder
- Salt
This helps evenly distribute the leavening agents throughout the cake.
Step 3: Cream the Butter, Oil, and Sugars
In a large mixing bowl, beat together:
- Butter
- Oil
- Granulated sugar
- Brown sugar
Mix until light and fluffy. This step creates air in the batter, helping the cake bake up soft and tender.
Add the eggs one at a time, then mix in the mashed bananas, vanilla extract, and coconut extract.
Step 4: Alternate the Flour and Buttermilk
Add the dry ingredients in three additions, alternating with the buttermilk.
Mix gently and stop once combined. Overmixing can make the cake dense instead of soft.
Fold in the shredded coconut by hand.
Step 5: Bake the Cake
Spread the batter evenly into the prepared pan and bake for 30 to 35 minutes.
You’ll know it’s done when:
- The top is lightly golden
- The center springs back gently
- A toothpick comes out clean
Allow the cake to cool completely before frosting.
Step 6: Frost and Finish
Beat the cream cheese and butter until smooth. Add powdered sugar gradually, followed by vanilla extract.
Whip until fluffy and spread over the cooled cake.
Finish with a generous layer of toasted coconut on top.
Serving Ideas
This banana coconut sheet cake works for so many occasions because it’s easy to slice and serve.
Try serving it:
- With coffee in the morning
- At brunch gatherings
- For Easter dessert
- At summer cookouts
- During baby showers
- For birthdays
- As a casual weekend dessert
For an extra touch, garnish slices with banana slices or lightly toasted coconut flakes right before serving.
Storage Tips
Because of the cream cheese frosting, this cake should be refrigerated.
Refrigerator
Store covered in the refrigerator for up to 5 days.
Freezer
You can freeze the unfrosted cake tightly wrapped for up to 2 months.
Thaw overnight in the refrigerator before frosting and serving.
Variations to Try
This recipe is easy to customize depending on the flavors you enjoy.
Add Chopped Nuts
Pecans or walnuts add crunch and pair beautifully with banana.
Use Pineapple
Add crushed pineapple for a more tropical flavor.
Add Cinnamon
A small amount of cinnamon gives the cake a warm flavor perfect for fall baking.
Make Cupcakes
The batter can also be baked as cupcakes. Just reduce the baking time.
Frequently Asked Questions
Can I use frozen bananas?
Yes. Thaw them completely and drain excess liquid before mashing.
Do I have to use coconut extract?
No. The cake still has coconut flavor from the shredded coconut, but the extract adds extra depth.
Can I make this ahead of time?
Absolutely. This cake actually tastes even better after chilling for several hours.
Can I use unsweetened coconut?
Yes. Unsweetened coconut works well if you prefer less sweetness.
A Cake That Works Year-Round
One of the best things about banana coconut sheet cake is how versatile it is. It feels light enough for spring and summer while still being comforting during cooler months. The banana flavor keeps it classic and familiar, while the coconut adds a fresh twist that makes it stand out from traditional banana cake recipes.
Since it’s baked in a single pan, it’s also far less time-consuming than layered cakes. You still get a beautiful dessert without spending hours decorating.
Whether you’re baking for a family gathering, bringing dessert to a party, or simply using up ripe bananas on the counter, this cake delivers soft texture, rich frosting, and plenty of homemade flavor in every bite.
More Dessert Recipes to Try
If you enjoyed this Banana Coconut Sheet Cake, here are a few more of my favorite homemade dessert recipes that are perfect for baking weekends, holidays, and sharing with family and friends.
- Sticky Toffee Banana Snack Cake – A soft banana snack cake topped with a rich toffee glaze that pairs perfectly with coffee or tea.
- Birthday Cake Blondies – Fun, buttery blondies filled with colorful sprinkles and classic birthday cake flavor.
- Chocolate Coconut Layer Cake – A rich chocolate cake layered with creamy frosting and coconut for a decadent dessert option.
Banana Coconut Sheet Cake
Ingredients
Equipment
Method
- Preheat the oven to 350°F (175°C). Grease a 9×13-inch baking pan.Spread the topping coconut onto a baking sheet and toast for 5–8 minutes, stirring occasionally, until golden brown. Set aside to cool completely.
- In a medium bowl, whisk together flour, baking soda, baking powder, and salt. Set aside.
- In a large mixing bowl or stand mixer, beat together softened butter, oil, granulated sugar, and brown sugar. Mix on medium-high speed until light and fluffy, about 3–4 minutes.Beat in the eggs one at a time. Add the mashed bananas, vanilla extract, and coconut extract, mixing until fully combined.
- Reduce the mixer speed to low.Add the dry ingredients in three additions, alternating with the buttermilk in two additions, beginning and ending with the flour mixture.Mix only until combined. Fold in the shredded coconut using a spatula.
- Spread the batter evenly into the prepared baking pan.Bake for 30–35 minutes, or until a toothpick inserted into the center comes out clean.Place the cake on a wire rack and cool completely before frosting.
- In a large bowl, beat the softened cream cheese and butter until smooth and creamy.Gradually add the powdered sugar one cup at a time. Add the vanilla extract and beat on high speed for about 2 minutes until light and fluffy.If needed, add the heavy cream or milk to slightly thin the frosting.
- Spread the cream cheese frosting evenly over the cooled cake.Top generously with the toasted coconut before slicing and serving.
