Key Lime Coconut Cupcakes are a delightful fusion of tropical flavors, combining the rich, nutty taste of coconut with the bright, tangy zest of key lime. These cupcakes are moist and fluffy, topped with a creamy key lime buttercream frosting that adds a refreshing finish. Perfect for any occasion, these cupcakes bring a taste of the tropics to your dessert table.

Why You’ll Love This Recipe
You’ll love these Key Lime Coconut Cupcakes for their unique blend of flavors and textures. The coconut-infused batter provides a moist and flavorful base, while the key lime buttercream frosting adds a tangy sweetness that perfectly complements the cupcake.
These cupcakes are not only delicious but also visually appealing with their light, airy texture and vibrant frosting. Ideal for parties, gatherings, or a special treat at home, they are sure to impress your guests and satisfy your sweet tooth.
Expert Tips and Tricks
- Use fresh key lime juice: Freshly squeezed key lime juice provides the best flavor for the frosting.
- Toast the coconut: Toasting the coconut before adding it to the batter enhances its flavor and adds a bit of crunch.
- Room temperature ingredients: Ensure all ingredients are at room temperature for a smooth batter and frosting.
- Sift the powdered sugar: Sifting prevents lumps in the frosting, resulting in a smoother texture.
- Zest first, then juice: Always zest the limes before juicing them to make the process easier.

Recipe Variations and Possible Substitutions
- Gluten-Free: Use a gluten-free flour blend to make the cupcakes gluten-free.
- Dairy-Free: Substitute coconut milk for regular milk and use dairy-free butter in the frosting.
- Lemon Variation: Replace key lime juice with lemon juice for a different citrus flavor.
- Coconut Cream Frosting: Use coconut cream instead of butter for a richer, dairy-free frosting.
- Add a Filling: Fill the cupcakes with a key lime curd for an extra burst of flavor.
Serving and Pairing Suggestions
Serve these Key Lime Coconut Cupcakes chilled or at room temperature, garnished with a sprinkle of toasted coconut or a slice of key lime on top.
Pair them with a refreshing beverage like iced tea, lemonade, or a tropical cocktail such as a piña colada. These cupcakes also pair well with a light, fruity white wine or a sparkling water infused with citrus.

Storage and Reheating Tips
- Refrigerate: Store cupcakes in an airtight container in the refrigerator for up to 5 days.
- Freeze: Freeze unfrosted cupcakes in a single layer, then transfer to a freezer-safe container for up to 3 months. Thaw overnight in the refrigerator before frosting.
- Reheat: Bring refrigerated cupcakes to room temperature before serving. Avoid microwaving as it can alter the texture of the frosting.
Recipe FAQs
- Can I use bottled key lime juice? Yes, but fresh key lime juice offers a more vibrant flavor.
- How can I prevent my cupcakes from sinking? Ensure your baking powder and baking soda are fresh and do not overmix the batter.
- Can I make these cupcakes ahead of time? Yes, you can bake the cupcakes a day in advance and frost them the day of serving.
- Is there a substitute for key limes? Regular limes can be used as a substitute, though the flavor will be slightly different.
- Can I use shredded coconut instead of desiccated? Yes, but desiccated coconut will provide a finer texture.
Key Lime Coconut Cupcakes
Enjoy tropical Key Lime Coconut Cupcakes with a moist coconut base and tangy key lime buttercream frosting. Perfect for any occasion!
Ingredients
- 1 ½ cups all-purpose flour
- 1 cup granulated sugar
- ½ cup unsalted butter, softened
- 2 large eggs
- ½ cup coconut milk
- 1 tsp vanilla extract
- 1 ½ tsp baking powder
- ½ tsp baking soda
- ¼ tsp salt
- 1 cup shredded coconut (toasted)
For the Key Lime Buttercream Frosting
- 1 cup unsalted butter, softened
- 4 cups powdered sugar, sifted
- 3 tbsp fresh key lime juice
- 1 tsp key lime zest
- 1-2 tbsp milk (optional, for consistency)
Instructions
- Preheat oven to 350°F (175°C) and line a muffin tin with cupcake liners.
- In a medium bowl, whisk together flour, baking powder, baking soda, and salt.
- In a large bowl, beat butter and sugar until light and fluffy. Add eggs one at a time, beating well after each addition.
- Mix in vanilla extract and coconut milk until combined.
- Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Fold in toasted coconut.
- Divide the batter evenly among the cupcake liners, filling each about 2/3 full.
- Bake for 20-25 minutes, or until a toothpick inserted into the center comes out clean. Allow to cool completely before frosting.
- In a large bowl, beat butter until creamy. Gradually add powdered sugar, beating until smooth.
- Add key lime juice and zest, and continue to beat until well combined. If the frosting is too thick, add milk one tablespoon at a time until the desired consistency is reached.
- Frost cooled cupcakes using a piping bag or a spatula.
Notes
Nutrition Information:
Yield: 12 Serving Size: 1Amount Per Serving: Calories: 534Total Fat: 28gSaturated Fat: 18gTrans Fat: 0gUnsaturated Fat: 8gCholesterol: 92mgSodium: 201mgCarbohydrates: 70gFiber: 1gSugar: 55gProtein: 3g






