The Best Coconut Lime Cake with Glaze

Name: Moist Tropical Coconut Lime Cake
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Ingredients: 1 1/2 sticks unsalted butter (softened - do not microwave; 170g); 2 cups sugar (400g); 4 large eggs; 3 cups cake flour (spooned into measuring cup and leveled off; 342g); 2 teaspoons baking powder (8g); 1/2 teaspoon baking soda (3g); 1/2 teaspoon salt (3g); 1 1/4 cups buttermilk (if you do not have buttermilk, see substitution below; 296g); 1/4 cup vegetable oil (54g); 1 tablespoon vanilla extract (12g); 2 limes (zest of 2 limes); 1 cup sugar; 1 cup water; 2 tablespoons lime juice; 1/2 cup sugar (100g); 2 tablespoons cornstarch (16g; cornflour in UK); 1/2 cup water (118g); 1 egg yolk (slightly beaten); 1 lime (zest of 1 lime); 2 tablespoons butter (28g); 2 tablespoons lime juice (or you can use the juice of 1 lime for a more tart flavor, just give it a taste test; 28g); 2 sticks unsalted butter (1 cup; 226g; slightly softened - do not microwave); 2 packages cream cheese; 1 1/2 teaspoons coconut extract (adjust to your liking; 6g); 1 teaspoon vanilla extract (4g); 6 to 6 1/2 cups powdered sugar (747g); 1 pinch salt; 1 bag sweetened coconut (14oz; 396g)

Moist Tropical Coconut Lime Cake

Moist coconut lime cake with zesty citrus sponge and creamy layers. Irresistible tropical dessert.

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Prep Time 15

Cook Time 20

Total Time 35

Servings: 1

Course: Cakes and Cupcakes

Cuisine: American, Asian, Mediterranean

Ingredients Method Notes

Ingredients

1 1/2 sticks unsalted butter softened - do not microwave; 170g
2 cups sugar 400g
4 large eggs
3 cups cake flour spooned into measuring cup and leveled off; 342g
2 teaspoons baking powder 8g
1/2 teaspoon baking soda 3g
1/2 teaspoon salt 3g
1 1/4 cups buttermilk if you do not have buttermilk, see substitution below; 296g
1/4 cup vegetable oil 54g
1 tablespoon vanilla extract 12g
2 limes zest of 2 limes
1 cup sugar
1 cup water
2 tablespoons lime juice
1/2 cup sugar 100g
2 tablespoons cornstarch 16g; cornflour in UK
1/2 cup water 118g
1 egg yolk slightly beaten
1 lime zest of 1 lime
2 tablespoons butter 28g
2 tablespoons lime juice or you can use the juice of 1 lime for a more tart flavor, just give it a taste test; 28g
2 sticks unsalted butter 1 cup; 226g; slightly softened - do not microwave
2 packages cream cheese 8oz. each; 452g total gram weight; use full fat cream cheese, slightly softened. Using reduced fat will cause the frosting to be too soft
1 1/2 teaspoons coconut extract adjust to your liking; 6g
1 teaspoon vanilla extract 4g
6 to 6 1/2 cups powdered sugar 747g
1 pinch salt
1 bag sweetened coconut 14oz; 396g

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Notes

Cake Flour Swap: If you don't have cake flour on hand, I've had great success using all-purpose flour with a simple trick: for each cup, remove two tablespoons of flour and replace them with cornstarch, then sift everything together a few times.

Make Ahead Curd: The lime curd filling is one of my favorite make-ahead components.

I often prepare it up to three days in advance and keep it covered in the fridge.

Just give it a good stir before using, and let it come to room temperature for about 15 minutes so it spreads easily.

Storing the Finished Cake: This cake stays beautifully moist in the refrigerator for up to four days.

I always cover it with a cake dome or wrap it loosely in plastic wrap.

Let it sit at room temperature for about 20 minutes before serving to let the flavors really shine through.

Common Mistake with the Syrup: I learned the hard way not to oversaturate the cake layers with the lime simple syrup.

A light brushing is all you need, otherwise the cake becomes too soggy and can collapse under the weight of the frosting.

Think of it as a gentle kiss of flavor, not a bath.

Serving Suggestion: For the prettiest presentation, I like to garnish each slice with a thin lime wheel and a small sprinkle of toasted coconut.

The contrast of textures and the bright citrus aroma really makes every bite special.

Equipment Alternative for Piping: If you don't have a piping bag, don't worry.

I've used a sturdy zip-top bag with the corner snipped off many times.

Just fill it with the coconut cream cheese frosting, twist the top closed, and pipe away.

It works perfectly for creating that decorative ring around the curd filling.

Tried this recipe?

Let us know how it was!

Why This Coconut Lime Cake Works (Finally)

Finding a truly moist coconut lime cake has been my quest for years. I mean, it sounds simple enough, right? Coconut and lime, two flavors that scream spring and sunshine. But I’ve had so many failures. Dry cakes that crumbled into sad piles. Cakes where the coconut flavor was just… missing. And the worst? A cake I brought to a potluck that was so dry, someone actually asked for water to wash it down. Mortifying.

The secret, honestly, is a lime syrup soak. It sounds fussy, like something a pastry chef would do. But it takes about 30 seconds. You poke holes in the warm cake, pour the syrup over, and it soaks right in. It’s the difference between a good cake and a great one. It guarantees moisture, and it punches up that lime flavor in a way that just mixing zest into the batter never could.

This recipe is my answer to all those failed attempts. It’s a coconut lime cake that’s soft, tender, and bursting with bright citrus and sweet coconut. It’s the kind of cake that makes you close your eyes on the first bite. Perfect for a spring brunch, a Mother’s Day surprise, or just because you want something that tastes like a vacation.

Ingredient Notes: What to Grab at the Store

You don’t need anything crazy for this tropical lime coconut dessert. Most of it is probably already in your pantry. But a few things matter more than you’d think.

The Limes. You’ll need both zest and juice. Regular supermarket limes work great. If you find key limes at your local Ralphs or Trader Joe’s, you can use those instead. They’re smaller and a bit more tart, so you’ll need more of them. But the flavor is amazing. Just don’t use that bottled lime juice, okay? It tastes flat and sad.

The Coconut. I use sweetened shredded coconut in the batter and for the garnish. It’s what most of us have on hand. You can use unsweetened if you prefer a less sweet cake, but I like the extra sweetness and texture it brings. Toasting it is key, by the way. More on that later.

The Buttermilk. This is what makes the cake so tender. The acid in buttermilk reacts with the baking soda to create a super soft crumb. If you don’t have buttermilk, here’s a quick fix: add one tablespoon of lime juice (or white vinegar) to a measuring cup, then fill it up with regular milk to the one-cup line. Let it sit for 5 minutes. Boom. Buttermilk.

Coconut Extract. This is optional, but I love it. It adds that extra layer of coconut flavor that really makes the cake sing. You can find it at most grocery stores near the vanilla extract. A little goes a long way, so don’t go overboard.

For the cream cheese frosting, make sure your butter and cream cheese are at room temperature. This is not being fussy, it’s the difference between a smooth, dreamy frosting and a lumpy, separated mess. Trust me on this.

The Science: Why This Cake Stays Moist

I’m not a food scientist, but I’ve learned a few things from all my baking fails. Here’s what’s happening in this cake.

Buttermilk and Sour Cream. Both add fat and acid. The fat keeps the cake tender. The acid helps break down the gluten, which means you get a soft, tender crumb instead of a tough, bready texture. It’s a one-two punch for moisture.

The Oil. I use a bit of vegetable oil in addition to the butter. Butter adds flavor, but oil stays liquid at room temperature. That means the cake stays moist for days, not just for the first few hours. It’s a trick I learned from making a southern living coconut cake years ago.

The Lime Syrup Soak. This is the game-changer. You make a simple syrup with lime juice and sugar, and you pour it over the warm cake. The warm cake absorbs the syrup like a sponge. It adds moisture, sweetness, and a punch of lime flavor that you just can’t get any other way. It’s a cross between a tres leches and a poke cake. And it works every time.

Toasted Coconut Garnish. Toasting the coconut brings out its natural oils and makes it crunchy and nutty. It’s a textural contrast that makes each bite more interesting. Plus, it looks beautiful on top of the cream cheese frosting.

Step-by-Step: Building Your Coconut Lime Cake

I’ll walk you through the process, but remember: the full ingredient list and exact instructions are in the recipe card above. This is just the narrative version, with all my tips and tricks.

Start with the Lime Curd. This is the filling between the layers. It’s a bit of a process, but it’s worth it. You whisk together sugar, cornstarch, water, egg yolk, lime zest, and lime juice. Then you cook it over medium heat until it thickens. It should be the texture of pudding. Then you stir in a little butter at the end for richness. The color will be naturally yellow, which is fine. If you want it greener, add a tiny drop of blue gel food coloring. But honestly, I usually skip that.

Make the Cake Batter. Cream the butter and sugar together until it’s light and fluffy. This takes about 3-4 minutes. Don’t rush it. Those air pockets are what make the cake rise. Then add the eggs one at a time. Then the dry ingredients and the buttermilk, alternating. Finally, fold in the shredded coconut. Here’s a tip: toss the coconut in a tablespoon of flour before adding it. This helps prevent it from sinking to the bottom of the cake.

Bake the Layers. I use 8-inch pans for a taller cake. You can use 9-inch pans too, but the layers will be shorter. If your pans are only 2 inches deep, use three pans instead of two. Bake at 350°F for about 25-30 minutes. If the top is browning too fast, tent it with foil. You’ll know it’s done when a toothpick comes out clean.

The Soak. While the cake is still warm, poke holes all over the top with a skewer or fork. Then pour the lime syrup over it. You’ll hear a happy sizzle as it soaks in. Let the cake cool completely before you even think about frosting it.

Make the Frosting. Beat the butter and cream cheese together until smooth. Then add the coconut extract, vanilla, and powdered sugar. Beat until it’s light and fluffy. If it’s too thick, add a splash of milk. If it’s too thin, add more powdered sugar.

Assemble. Place one cake layer on your serving plate. Spread a layer of lime curd on top, leaving a small border around the edge. Then pipe or spread a ring of cream cheese frosting around the edge of the curd. This creates a dam to keep the curd from leaking out. Top with the second layer. Frost the whole cake with the remaining frosting. Press toasted coconut onto the sides and top. Garnish with lime zest curls if you’re feeling fancy.

Common Coconut Lime Cake Mistakes & Fixes

Mistake: The cake is dry.
Solution: You probably overbaked it. Check for doneness a few minutes early. Also, make sure you use the lime syrup soak. It’s not optional.

Mistake: The coconut sinks to the bottom.
Solution: Toss the shredded coconut in a tablespoon of flour before folding it into the batter. That little coating helps it stay suspended.

Mistake: The lime curd leaks out of the sides.
Solution: You need a frosting dam. Pipe a ring of cream cheese frosting around the edge of the curd before adding the top layer. It holds everything in place.

Mistake: The cake layers are domed.
Solution: Use cake strips around your pans, or just trim the domes off with a serrated knife once the cakes are cool. A flat top makes stacking so much easier.

Tips for the Best Coconut Lime Cake

I’ve made this cake more times than I can count. Here’s what I’ve learned.

Room Temperature Ingredients. This is not a suggestion. It’s a rule. Cold butter won’t cream properly. Cold eggs will seize the batter. Cold cream cheese will make lumpy frosting. Set everything out an hour before you start baking.

Shake the Coconut Milk. If you’re using coconut milk in the cake (I use buttermilk, but some versions use coconut milk), make sure you shake the can really well before opening. The cream separates from the liquid, and you want it emulsified.

Toast the Coconut. Spread the shredded coconut on a sheet pan and bake at 350°F for 3-5 minutes. Watch it closely. It goes from golden to burnt in about 10 seconds. You want it a light golden brown. The smell when it toasts is incredible.

Make the Cake Ahead. This cake is actually better the next day. The flavors meld together, and the syrup soaks in even more. You can bake the cake layers a day or two ahead. Cool them completely, wrap them individually in plastic wrap, and store them in the fridge. You can even freeze them for a month or two. Thaw before frosting.

Use a Serrated Knife for Layers. If you’re making a layered cake, use a long serrated knife to level the tops. It gives you a flat, even surface for stacking. And it’s way easier than trying to cut with a straight blade.

Don’t Skip the Frosting Dam. I said it before, but it’s worth repeating. The lime curd is soft and wants to escape. A ring of frosting around the edge keeps it contained. Your cake will look professional and clean.

Variations to Try

This recipe is pretty versatile. Here are some ways to switch it up.

Lemon Coconut Cake. Swap the lime for lemon. Use lemon zest and lemon juice in the cake, the curd, and the syrup. It’s just as bright and delicious. Meyer lemons, which you can find at farmers markets in LA, are especially good here.

Coconut Lime Bundt Cake. Skip the layering and the curd. Pour the batter into a greased and floured bundt pan. Bake for about 45-50 minutes. Pour the lime syrup over the warm cake. Let it cool, then drizzle with a simple glaze made from powdered sugar and lime juice. It’s so much easier, and it looks stunning.

Gluten Free Coconut Lime Cake. Swap the all-purpose flour for a 1:1 gluten-free flour blend. Make sure it contains xanthan gum. The texture will be slightly different, but it’ll still be delicious and moist.

Dairy Free Lime Cake. Use a dairy-free butter substitute and a dairy-free cream cheese for the frosting. You can also use coconut cream in the cake instead of buttermilk. Just make sure everything is at room temperature.

Coconut Lime Cupcakes. Divide the batter into a lined muffin tin. Bake for about 15-18 minutes, starting to check at 15. Poke holes in the warm cupcakes and brush with the lime syrup. Frost with the cream cheese frosting and top with toasted coconut. Perfect for parties.

Key Lime Version. Use key limes instead of regular limes. You’ll need more of them, probably about 10-12. The flavor is more floral and tart. It’s a wonderful variation that feels even more tropical.

Frequently Asked Questions

Storage & Serving Suggestions

This cake stays moist and delicious for days, thanks to that lime syrup soak. Here’s how to handle leftovers.

Refrigerate. Store the cake in an airtight container in the fridge. It’ll keep for up to four days. The cream cheese frosting needs to stay cold. But don’t serve it straight from the fridge. Let it sit out for 15-20 minutes to take the chill off. The flavors are much brighter at room temperature.

Freeze for Later. If you want to freeze the whole cake, it’s best to do it before you add the frosting. Wrap the cooled, unsoaked cake layers in plastic wrap and then foil. They’ll keep for 2-3 months. When you’re ready, thaw them in the fridge, make the syrup and frosting, and assemble.

What to Serve With It. This cake is pretty perfect on its own. But if you want to go all out, serve it with a scoop of coconut ice cream or a handful of fresh berries. A drizzle of passion fruit puree would be amazing too. For a spring brunch, it pairs beautifully with a cup of coffee or a tall glass of iced tea.

When you slice into this cake, you’ll see the perfect crumb. The bright yellow lime curd peeking out between the layers. The creamy white frosting. The golden toasted coconut on top. It’s a thing of beauty. And it tastes even better than it looks.

Your spring gathering just got a whole lot more delicious. Go bake! And when you do, tag me on Instagram with #CoconutLimeCake. I’d love to see your creation. For more inspiration, check out my Pinterest boards for even more tropical dessert ideas.

Source: Nutritional Information

Can I make this Coconut Lime Cake gluten free?

Yes. Substitute the all-purpose flour with a 1:1 gluten-free baking flour blend. Make sure it contains xanthan gum for structure. The texture will be slightly more tender, but the flavor will be just as bright and delicious.

Can I substitute the lime flavor with another citrus?

Absolutely. Lemon, orange, or even grapefruit would work beautifully. Use the same amount of zest and juice. Meyer lemon is a personal favorite for its sweetness. Key limes are also a fantastic swap.

How can I customize this coconut soaked lime cake?

You can add a handful of fresh berries between the layers, swap the lime curd for a lemon curd, or fold in some toasted macadamia nuts. You could also drizzle the finished cake with a white chocolate ganache for extra indulgence.

How do I store leftover Coconut Lime Cake?

Store it in an airtight container in the refrigerator for up to four days. The cream cheese frosting needs to stay chilled. Let the cake sit at room temperature for about 15 minutes before serving for the best flavor and texture.

How do I freeze this Coconut Lime Cake?

Freeze the cake layers without the soak or frosting. Wrap each layer tightly in plastic wrap, then a layer of foil. Store for up to three months. Thaw overnight in the refrigerator, then add the syrup and frosting before serving.

Could I make this coconut soaked lime cake ahead of time?

Yes. Bake the cake layers a day ahead, add the lime syrup soak, wrap them in plastic, and refrigerate overnight. Assemble and frost the cake the next day. The flavors actually get better as they meld together.

What size tin should I make this in?

I prefer two 8-inch round cake pans for a tall, impressive layer cake. You can also use 9-inch pans for slightly shorter layers. If using 9-inch pans, reduce the baking time by a few minutes. A bundt pan works great too.

Is this cake dairy free?

Not as written. The cake uses buttermilk and butter, and the frosting uses cream cheese. However, you can make it dairy free by using a dairy-free butter substitute, a dairy-free cream cheese, and a dairy-free milk with a splash of lime juice in place of buttermilk.

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The Best Coconut Lime Cake with Glaze