Banana Cake With Penuche Frosting Recipe: Velvety Layers and Toasted Coconut Crunch

This banana cake with penuche frosting recipe delivers the perfect balance of moist, spiced cake and toasted coconut crunch—ideal for special occasions or cozy afternoons. 🌟 The secret lies in perfectly ripened bananas and a slow-baked cake that stays tender, topped with a velvety coconut frosting that melts in your mouth while providing satisfying texture.

What sets this recipe apart is the penuche frosting, a tropical twist that transforms ordinary banana cake into something extraordinary. The frosting combines toasted coconut flakes with sweetened condensed milk and butter, creating a rich, spreadable topping that's both indulgent and elegant. This dessert is foolproof for beginners but impressive enough for any gathering.

By the time you're done, you'll have a cake with golden layers and a crispy coconut crown that looks as beautiful as it tastes. The warm banana flavor pairs perfectly with the toasted coconut notes, making every bite a delightful contrast of textures and flavors. The best part? It comes together in just one hour with simple ingredients you likely already have.

Perfect for birthdays, brunch gatherings, or when you simply crave something comforting, this recipe delivers restaurant-quality results without the fuss. The cake stays moist for days, and the penuche frosting adds that special touch that makes it unforgettable. Let's get baking!

Ingredients for banana cake with penuche frosting

Golden layers of spiced banana cake crowned with velvety penuche frosting—just eight simple ingredients transform into something extraordinary.

The bananas are non-negotiable—ripe, with brown spots and soft to the touch—for that perfect sweetness. Trader Joe's or your local market usually have the best selection. For the coconut flakes, toast them lightly in a dry pan until golden—this brings out their nutty flavor. The sweetened condensed milk can be found in the baking aisle, but check the expiration date since it's shelf-stable. If you're making this ahead, store the cake components separately and assemble just before serving for the freshest texture.

No ripe bananas? Use 3 medium bananas—they'll be slightly less sweet but still work. Running low on powdered sugar? Sift granulated sugar for a fine texture. The frosting can be made a day ahead and stored in the fridge—just re-whip before serving for that perfect cloud-like consistency. For extra richness, add a tablespoon of coconut cream to the frosting. The cinnamon is key here—use freshly ground if possible, or toast whole cinnamon sticks and grind them yourself for an even deeper flavor.

The cake keeps beautifully for 4-5 days in an airtight container at room temperature, though the frosting may need a quick re-whip. For longer storage, wrap tightly in plastic and refrigerate for up to 1 week. The frosting itself can be stored separately for 2 weeks in the fridge. Portion the frosting into small containers if you're making multiple cakes—it's easier than re-measuring later. Freeze the cake (unfrosted) for up to 3 months—just thaw at room temperature before adding the frosting.

Step-by-step instructions for banana cake with penuche frosting

Here's how to create layers of moist banana cake with that signature toasted coconut crunch.

In a large mixing bowl, mash the 3 large ripe bananas until completely smooth—no lumps allowed. The riper the bananas, the sweeter and moister your cake will be. Stir in the 1 cup unsalted butter (room temperature) until fully incorporated, then add the 1 can chilled sweetened condensed milk and 1 tbsp vanilla extract. Mix until smooth and creamy.

This combination creates the perfect balance of moisture and richness. The condensed milk adds natural sweetness while keeping the cake tender. I like to use a hand mixer here for about 1 minute to ensure everything is well blended and air is incorporated.

In a separate bowl, whisk together the 2.5 cups all-purpose flour, 1.5 cups granulated sugar, 1 tsp baking soda, 1 tsp ground cinnamon, and 0.5 tsp salt. Sift the flour first for the lightest texture possible—this prevents dense cake layers. Gradually add the dry mixture to the wet ingredients while mixing on low speed.

Once combined, fold in the 2 cups toasted coconut flakes using a silicone spatula. Be gentle here—overmixing develops gluten and makes the cake tough. The coconut adds that signature crunch while keeping the cake's texture delightfully soft. The batter should be thick but pourable.

Preheat your oven to 350°F and grease two 8-inch round cake pans (or line with parchment paper). Divide the batter evenly between the pans and bake for 25-30 minutes, or until a toothpick inserted in the center comes out clean. The edges should be golden brown while the center remains slightly springy.

I recommend baking both layers simultaneously for even results. Let the cakes cool in the pans for 10 minutes before transferring to a wire rack to cool completely. This gradual cooling prevents cracking and helps the layers set properly for frosting.

In a medium bowl, beat the 3 cups powdered sugar with the 2 whole room-temperature eggs on medium speed until smooth and creamy. This is where the magic happens—the powdered sugar and eggs combine to create that signature silky penuche texture. Add the 1 tbsp vanilla extract and mix until fully incorporated.

Fold in 1 cup of the toasted coconut flakes (reserve the remaining for garnish) using a spatula. The frosting should be thick but spreadable. If it's too stiff, add 1-2 tablespoons of milk to loosen it. This coconut-infused frosting is what makes this cake truly special—it's sweet, creamy, and has that perfect toasted crunch.

Place one cake layer on a serving plate and spread a generous layer of the penuche frosting. Top with the second cake layer and spread the remaining frosting over the top and sides. Use a spatula to create smooth sides or a rustic texture—whichever you prefer. Sprinkle the remaining 1 cup toasted coconut flakes evenly over the top for that final crunchy touch.

Let the cake sit at room temperature for 30 minutes before slicing. This allows the frosting to set slightly and makes for cleaner cuts. Serve at room temperature for the best texture contrast—moist cake, creamy frosting, and crunchy coconut in every bite. This cake tastes even better the next day when the flavors have fully melded together.

Health benefits of this banana cake with penuche frosting

Banana Powerhouse

This banana cake packs a nutritional punch with its 3 ripe bananas—each medium banana contains about 105 calories and 3 grams of fiber, helping keep you full while satisfying sweet cravings. The bananas also provide potassium (about 422mg per banana), which supports heart health and muscle function. 💪

When combined with the 1 can sweetened condensed milk, you get a natural sweetness boost without refined sugar overload. The 2 cups toasted coconut flakes add healthy fats and electrolytes like magnesium, which aids muscle and nerve function. Together, these ingredients create a dessert that's surprisingly balanced for something so indulgent.

Coconut Benefits

The toasted coconut flakes in both the cake and penuche frosting bring medium-chain triglycerides (MCTs), which your body converts directly into energy rather than storing as fat. These healthy fats also support brain function and provide a quick energy lift—perfect for post-workout recovery or when you need a natural pick-me-up. 🥥

Coconut also contains lauric acid, a compound with antimicrobial properties that may help strengthen your immune system. The toasted version enhances these benefits while adding that irresistible crunch. Just 2 tablespoons of coconut flakes provide about 120 calories and 11 grams of healthy fats—a small but mighty boost to your dessert.

Protein Boost

While this cake isn't a high-protein dessert, the 2 eggs in the penuche frosting contribute 12 grams of complete protein—all nine essential amino acids your body needs. Eggs also provide vitamin D and choline, which supports brain health and metabolism. The 2.5 cups all-purpose flour adds a modest 8 grams of protein to the cake layers, making this dessert slightly more satisfying than traditional cakes.

For a protein upgrade, consider adding 1 scoop vanilla protein powder to the cake batter (about 20-25 grams extra protein). I've tested this with Orgain or Fairlife brands and found it blends seamlessly without altering the texture. 💪

Fiber for Satiety

The combination of bananas, coconut, and whole wheat flour (if you substitute ½ cup all-purpose flour with whole wheat) creates a fiber-rich dessert. Each serving delivers about 3-4 grams of fiber, which helps stabilize blood sugar levels and keeps you feeling full longer. The ground cinnamon in the cake also aids blood sugar regulation by improving insulin sensitivity. 🌿

For even more fiber, sprinkle 1 tablespoon chia seeds into the batter before baking—they'll absorb moisture and create a delightful texture while adding 5 grams of fiber per tablespoon. The chia seeds also provide omega-3 fatty acids, which support heart and brain health.

Antioxidant Rich

The ground cinnamon in this recipe isn't just for flavor—it's packed with polyphenol antioxidants that help combat oxidative stress in your body. Just 1 teaspoon provides about 12% of your daily antioxidant needs. The toasted coconut flakes also contain antioxidants like vitamin E and selenium, which protect your cells from damage. 🌟

For an extra antioxidant boost, add ½ teaspoon turmeric to the cake batter (it pairs beautifully with cinnamon). Turmeric contains curcumin, a compound with powerful anti-inflammatory properties. The golden spice won't overpower the banana flavor but will add a subtle earthy note that complements the coconut perfectly.

Frequently asked questions