As I pulled this Coconut Lime Mousse Cake from the refrigerator, the tropical aroma of coconut and lime filled the kitchen, instantly transporting me to a sun-soaked beach. This delightful fusion dessert is not only a feast for the senses but also a quick triumph in the baking world, requiring just a handful of ingredients and minimal fuss. The chocolate cake underneath provides a rich and satisfying base, beautifully complemented by the airy, refreshing mousse on top. Whether you’re celebrating a special occasion or just need a sweet escape from everyday life, this cake is a sure crowd-pleaser that’s certain to leave everyone smiling. Curious how to recreate this slice of paradise? Let’s dive into the recipe!

Why is Coconut Lime Mousse Cake irresistible?
Tropical Escape: This cake brings a taste of the tropics right to your kitchen, blending rich chocolate with refreshing coconut and zesty lime.
Quick and Easy: With just a few simple steps, anyone can master this delightful recipe, making it accessible for both novice bakers and seasoned pros.
Moist and Flavorful Layers: The combination of a soft chocolate base and a light mousse creates a balance that’s simply delightful.
Crowd-Pleasing Treat: Perfect for gatherings or just a weekend indulgence, it’s guaranteed to impress friends and family, much like our Christmas Carrot Cake or Thanksgiving Cranberry Cake.
Versatile and Unique: Feel free to customize with different citrus flavors or add layers of fruit for an extra twist!
Coconut Lime Mousse Cake Ingredients
Ready to whip up your own Coconut Lime Mousse Cake? Here’s everything you need to create this tropical delight!
For the Cake
- All-purpose flour – Provides structure and texture; substitute with gluten-free flour for a gluten-free option.
- Unsweetened cocoa powder – Delivers rich chocolate flavor; be sure to use unsweetened to keep the cake balanced.
- Granulated sugar – Sweetens the cake beautifully.
- Unsalted butter (softened) – Adds richness and moisture for a tender crumb.
- Large eggs – Bind ingredients together and help the cake rise.
- Coconut milk – Moistens the cake while infusing a delightful coconut flavor; swap with whole milk if preferred.
- Baking powder & Baking soda – These leaveners ensure your cake bakes perfectly fluffy.
- Salt – A pinch enhances the overall flavor, balancing sweetness.
- Zest of 1 lime – Brings a bright citrus note to the cake.
For the Mousse
- Heavy cream – The key to a light, creamy mousse.
- Coconut cream – Adds luxurious richness and coconut flavor.
- Powdered sugar – Sweetens the mousse to perfection.
- Vanilla extract – Amplifies the flavor base with warmth.
- Juice of 1 lime – Brightens and enhances the mousse flavor.
- Unflavored gelatin powder – Stabilizes the mousse, ensuring the perfect texture.
- Cold water – Used to bloom the gelatin for the mousse.
For Garnish
- Toasted coconut flakes – Adds texture and rustic charm; sprinkle generously for flavor!
- Lime slices – Fresh garnishes that enhance the presentation while adding a pop of color.
Dive into making your own Coconut Lime Mousse Cake and savor the tropical vibes in every delicious bite!
Step‑by‑Step Instructions for Coconut Lime Mousse Cake
Step 1: Prepare the Cake
Preheat your oven to 350°F (175°C) and grease an 8-inch round cake pan. In a large mixing bowl, cream softened butter and granulated sugar together until fluffy, about 3-4 minutes. Gradually add eggs one at a time, mixing well after each addition. In another bowl, whisk together the all-purpose flour, cocoa powder, baking powder, baking soda, and salt. Alternate adding the dry mixture and coconut milk to the wet mixture, stirring until just combined. Lastly, fold in the lime zest, pour into the prepared pan, and bake for 25-30 minutes until a toothpick inserted in the center comes out clean. Allow the cake to cool completely on a wire rack.
Step 2: Make the Mousse
While the cake cools, prepare the coconut lime mousse. Begin by blooming the unflavored gelatin powder in cold water for about 5 minutes. Gently heat the bloomed gelatin over low heat until dissolved, stirring constantly. In a separate bowl, whip the heavy cream until soft peaks form, then gradually add powdered sugar, vanilla extract, and lime juice, whipping until stiff peaks form. Carefully fold the melted gelatin and coconut cream into the whipped cream mixture until smooth and well combined, ensuring the mousse remains airy.
Step 3: Assemble the Cake
Once your cake has completely cooled, use a serrated knife to slice the cake in half horizontally, creating two even layers. Place the bottom layer on a serving plate and spread half of the coconut lime mousse evenly over it. Gently place the top layer back on and smooth the remaining mousse on top, ensuring an even coverage. Refrigerate the assembled Coconut Lime Mousse Cake for at least 4 hours, allowing the mousse to set and flavors to meld beautifully.
Step 4: Garnish and Serve
Before serving, take the cake out of the refrigerator and sprinkle the top generously with toasted coconut flakes for added texture and flavor. Optionally, place fresh lime slices around the cake for a vibrant presentation. Slice into generous pieces and serve this delightful Coconut Lime Mousse Cake to enjoy a taste of tropical bliss with every bite!

How to Store and Freeze Coconut Lime Mousse Cake
Fridge: Store the Coconut Lime Mousse Cake covered with plastic wrap or in an airtight container for up to 3 days. This helps maintain its freshness and prevents the mousse from drying out.
Freezer: If you need to store it longer, freeze the cake without the mousse topping. Wrap it tightly in plastic wrap and aluminum foil for up to 2 months. Thaw in the fridge before adding mousse.
Reheating: For best taste, serve chilled as it’s meant to be enjoyed cold; however, if desired, you can warm individual pieces in the microwave for about 10 seconds to slightly soften.
Assembling After Freezing: If frozen, ensure the cake is completely thawed before applying the mousse layer; this will keep the dessert’s texture light and delightful.
Coconut Lime Mousse Cake Variations & Substitutions
Feel free to make this Coconut Lime Mousse Cake your own with these delightful twists that cater to your taste buds!
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Gluten-Free: Use a gluten-free flour blend to make this heavenly dessert accessible for everyone.
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Citrus Swap: Try substituting lime with lemon or orange juice for different citrusy notes that brighten the flavors.
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Creamy Coconut Twist: Swap regular coconut milk for full-fat coconut cream for a richer, creamier cake base.
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Fruit Layers: Add layers of fresh berries or mango slices between the cake and mousse for a refreshing surprise.
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Dark Chocolate: For a deeper flavor, use dark cocoa powder instead of unsweetened for a luxurious chocolatey touch.
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No-Bake Option: Transform this into a no-bake delight by using a cookie crumb crust beneath the mousse for added texture.
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Vegan Version: Swap eggs for flax eggs and use non-dairy alternatives like coconut yogurt to create a vegan take on this recipe.
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Spice It Up: Add a sprinkle of cinnamon or nutmeg to the cake batter for a warm, inviting flavor twist that complements the tropical essence.
As you experiment with these ideas, you’ll find countless ways to enjoy the fruity, refreshing goodness of this Coconut Lime Mousse Cake. Don’t forget to check out other delightful recipes like our Fried Strawberry Cheesecake or the light and flavorful Strawberry Cheesecake Protein Balls for more inspiration!
Expert Tips for Coconut Lime Mousse Cake
• Room Temperature Eggs: Ensure your eggs are at room temperature for better incorporation into the batter, creating a lighter cake texture.
• Gelatin Cooling: Allow the gelatin mixture to cool slightly before adding it to the whipped cream to avoid lumps, ensuring a smooth mousse.
• Gentle Folding: Be gentle when folding the mousse ingredients together to maintain its airy consistency, key to a delightful Coconut Lime Mousse Cake.
• Bake Evenly: Check the cake early to avoid overbaking; it should be just set and a toothpick should come out clean for the perfect moist crumb.
• Chill Time: Don’t rush the refrigeration time; allowing at least four hours ensures the mousse sets properly for the best texture when sliced.
What to Serve with Coconut Lime Mousse Cake?
Prepare to elevate your dining experience with delightful pairings that will complement this tropical dessert!
- Fresh Berries: These brighten the plate and enhance the cake’s flavors while adding a touch of natural sweetness.
- Coconut Sorbet: A light and refreshing dessert that mirrors the cake’s coconut flavor beautifully, making for a joyful combination.
- Limeade: This zesty drink balances the richness of the cake, providing a refreshing palate cleanser between bites.
- Creamy Vanilla Ice Cream: The smoothness of vanilla ice cream pairs exquisitely with the cake’s rich chocolate and airy mousse, creating a comforting duo.
- Coconut Macaroons: These chewy treats echo the coconut theme while adding a satisfying texture contrast, perfect for an afternoon tea.
- Mango Salsa: The sweetness and tanginess of the salsa adds a fun, tropical twist, making every bite an adventure.
- Crispy Citrus Salad: A vibrant mix of greens, citrus, and a light vinaigrette offers freshness that offsets the cake’s richness.
- Sparkling Water with Lime: A refreshing drink that keeps with the theme while adding effervescence to your celebration.
- Key Lime Pie: If you’re feeling extra indulgent, this dessert brings a delightful tartness that beautifully contrasts with the mousse’s sweetness.
Make Ahead Options
These Coconut Lime Mousse Cakes are perfect for busy cooks looking to save time! You can prepare the rich chocolate cake base up to 24 hours in advance; simply bake, cool, and refrigerate tightly wrapped in plastic to maintain moisture. The luscious coconut lime mousse can also be made a day ahead and stored in the refrigerator, but be sure to cover it well to prevent it from absorbing any odors. When you’re ready to serve, just assemble the cake by layering the mousse on the cooled cake and refrigerate for at least 4 hours (or overnight) to set. Your dessert will be just as delicious, allowing you to enjoy a tropical treat with minimal stress on the day of your gathering!

Coconut Lime Mousse Cake Recipe FAQs
How do I choose ripe limes for my Coconut Lime Mousse Cake?
Absolutely! Look for limes that are firm, smooth, and slightly heavy for their size. Avoid any that are dull or have dark spots; these are signs of overripeness. Juicy limes will have a slight give when gently squeezed.
What’s the best way to store leftovers of Coconut Lime Mousse Cake?
To keep your Coconut Lime Mousse Cake fresh, cover it with plastic wrap or place it in an airtight container. It will stay delicious in the refrigerator for up to 3 days. Make sure you don’t leave it exposed, or the mousse could dry out!
Can I freeze Coconut Lime Mousse Cake?
Yes! To freeze, it’s best to wrap the cake without the mousse layer. Wrap it tightly in plastic wrap, then in aluminum foil, and it will stay good for up to 2 months. When you’re ready to enjoy, just thaw it in the refrigerator overnight before adding the mousse.
What should I do if my mousse isn’t setting properly?
If your mousse isn’t setting, don’t worry! Make sure the gelatin is fully dissolved and not too hot when mixing it into the whipped cream, as this can cause it to lose its stability. Try refrigerating the mousse for an additional hour or so to help it firm up before serving.
Can I make a gluten-free version of the Coconut Lime Mousse Cake?
Absolutely! Replace the all-purpose flour with a gluten-free flour blend. Ensure that all your other ingredients, like baking powder and cocoa powder, are gluten-free as well. This way, you can enjoy the tropical delight without worrying about gluten!
Is this recipe safe for pets?
While Coconut Lime Mousse Cake is a treat for humans, it’s not safe for pets, especially the chocolate content, which can be harmful to dogs and cats. Always enjoy your delicious cakes yourself, and keep it away from your furry friends!

Coconut Lime Mousse Cake: A Taste of Tropical Bliss
Ingredients
Equipment
Method
- Preheat your oven to 350°F (175°C) and grease an 8-inch round cake pan.
- In a large mixing bowl, cream softened butter and granulated sugar together until fluffy, about 3-4 minutes.
- Gradually add eggs one at a time, mixing well after each addition.
- In another bowl, whisk together the all-purpose flour, cocoa powder, baking powder, baking soda, and salt.
- Alternate adding the dry mixture and coconut milk to the wet mixture, stirring until just combined.
- Fold in the lime zest, pour into the prepared pan, and bake for 25-30 minutes until a toothpick comes out clean.
- Allow the cake to cool completely on a wire rack.
- While the cake cools, bloom the unflavored gelatin powder in cold water for about 5 minutes.
- Gently heat the bloomed gelatin over low heat until dissolved, stirring constantly.
- In a separate bowl, whip the heavy cream until soft peaks form, then gradually add powdered sugar, vanilla extract, and lime juice.
- Carefully fold melted gelatin and coconut cream into the whipped cream mixture until smooth.
- Once cooled, slice the cake in half horizontally to create two layers.
- Place the bottom layer on a plate and spread half of the coconut lime mousse over it.
- Gently place the top layer back on and smooth the remaining mousse on top.
- Refrigerate for at least 4 hours.
- Before serving, sprinkle with toasted coconut flakes and place top with lime slices.

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