How to Make a Mermaid Cake






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Have you ever dreamed of under the sea adventures and encountering a mermaid? Well, why not bring that dream to reality by making a mermaid cake? Baking a mermaid cake may seem like an intimidating task, but with the right tools and techniques, it can be an easy and fun project. It is the perfect dessert for any mermaid-themed party or celebration. In this article, we will guide you through the process of making a mermaid cake step-by-step. From preparing the batter to creating the scales, fin, and tail, we will show you how to create a stunning masterpiece that will impress all your guests. So, grab your apron, preheat your oven, and let’s dive into the world of mermaid cakes!

Preparing the Cake

If you want to make a mermaid cake, the first step is to prepare your cake. There are various types of cakes you can use, including vanilla, chocolate, or even funfetti. However, for a mermaid theme cake, it’s best to go with a blue-colored cake. A blue velvet or blueberry-flavored cake will work perfectly.


Before you start baking your cake, ensure that you have all the necessary ingredients on hand. For an eight-inch round cake pan, you’ll need:

  • 2 cups of all-purpose flour
  • 1½ cups granulated sugar
  • 3 teaspoons baking powder
  • 1 teaspoon salt
  • ½ cup unsalted butter at room temperature
  • ¾ cup whole milk at room temperature
  • 2 large eggs at room temperature
  • Blue food coloring


  1. Preheat your oven to 350°F (175°C). Grease an eight-inch round pan with butter and set it aside.
  2. In a medium mixing bowl whisk together flour, sugar baking powder and salt.
  3. Add in the unsalted butter and mix until well combined.
  4. Pour in milk and eggs; mix on low speed until just combined then increase speed to medium-high until batter is smooth.
  5. Add some drops of blue food coloring gradually into the batter while stirring until desired color is achieved.
    6.Pour batter into prepared pan and bake for about thirty-five minutes or when toothpick inserted comes out clean from center,
    7.Remove from oven let cool completely before frosting.

Now that your cake is ready let’s move on to frosting it up!

Making the Buttercream Frosting

Once your cake is baked and cooled, it’s time to make the buttercream frosting. Buttercream frosting is a classic choice for decorating cakes because it’s easy to make and can be customized with different colors and flavors. For a mermaid cake, we’ll be making buttercream frosting in shades of blue and purple.

Assembling the Mermaid Cake

You are now at the most fun part: Assembling your mermaid cake! Once you have baked your cake layers and made your deliciously colored frostings, it’s time to put everything together.

Keep reading for step-by-step instructions on how to assemble your mermaid cake:

  1. Once your cake layers have cooled, place one layer on a cake stand or plate.
  2. Add a thick layer of blue buttercream frosting using an offset spatula and smooth it out evenly.
  3. Place the second layer of the cake over the frosting and repeat step 2.
  4. Finally, add the third layer of the cake over the second layer and cover it with purple buttercream frosting
  5. Use an offset spatula to spread some blue buttercream frosting on top part only along with some waves pattern.
    6.Use same method to spread some purple butter cream frosting at bottom only along with some waves pattern for creating an ombre effect
    7.Decorate with edible pearls or seashell candies for a perfect mermaid finish.

After following these steps you will have created a beautiful mermaid-themed cake that is sure to be loved by all!

Coloring the Frosting

One of the most important parts of making a mermaid cake is getting the right colors for your frosting. You want to aim for shades of blue and purple that mimic the colors of the ocean and mermaid tails. Here’s how you can achieve those perfect colors.

Gel Food Coloring

When it comes to coloring frosting, gel food coloring works better than liquid food coloring because it doesn’t water down your frosting or change its texture.

Blue Food Coloring

For blue buttercream frosting, start with a small amount of gel food coloring and add more as needed until you get your desired shade. You can go for a light pastel blue or a darker navy blue depending on your preference.

Purple Food Coloring

When it comes to making purple buttercream frosting, use equal amounts of red and blue gel food coloring to achieve deep purple color. Start with small drops into white butter cream then stir in adding more if necessary until required shade is achieved.

Ombre Effect

To create an ombre effect where there is gradient shading from one color to another, take some white butter cream out separately in bowls before adding any color.
– Add some drops of purple gel food coloring into one bowl while stirring until desired color is achieved.
– Add some drops of blue gel food coloring into another bowl while stirring until desired color is achieved.
Now that we have our perfectly colored frostings let’s move onto decorating our mermaid cake!

Decorating Your Mermaid Cake

Decorating your mermaid cake can be as simple or as elaborate as you want it to be! Here are some tips on how you can decorate your mermaid cake:

Edible Pearls

Edible pearls are great for decorating cakes because they give them an elegant feel. They come in different sizes so choose what suits best according to size and design pattern on top surface.

Seashell Candies

Seashell candies are another great option for decorating a mermaid cake. They can be placed around the cake or used as a topper. You can make some seashells using candy molds or find them readily available in stores.

Edible Glitter

If you want to add some sparkle to your mermaid cake, edible glitter is perfect! It comes in different colors and can be sprinkled on top of the frosting for added effect.

Fondant Mermaid Tail

To take things up a notch, you could create a fondant mermaid tail that wraps around your cake. This would require some additional work and skill but it’s worth it for an impressive finish.

With these tips and tricks, you’re now ready to decorate your mermaid cake! Remember to have fun with it and let your creativity shine through.

Decorating the Cake with Fondant Scales

If you want to take your mermaid cake to the next level, creating fondant scales on the sides of your cake can make it look even more like a mermaid tail. Here’s how you can decorate your cake with fondant scales.

Finishing Touches

To complete your mermaid themed-cake, here are some finishing touches:

Add Some Shimmery Luster Dust

Luster dust is edible glitter that gives cakes a shimmery appearance. You can choose colors like gold or silver luster dust which will give shimmering effect resembling pearls and seashells.

Create Fondant Mermaid Tails

You can create small, detailed fondant mermaid tails using molds or cutting them freehand from rolled-out pieces of colored fonadnt to resemble a mermaid tail. Attach them to the top of your cake or use them as cake toppers.

Add Edible Decorations

Edible decorations like sea horses, starfish, seashells and pearls can be added alongside fondant scales on sides of your cake. These can be purchased from stores or made using molds at home.

With these finishing touches, your mermaid-themed cake is now complete! Remember that practice makes perfect when it comes to decorating cakes so don’t give up if it doesn’t turn out perfectly the first time. Enjoy the process and have fun creating a beautiful and delicious dessert that everyone will love!

Adding Finishing Touches to the Mermaid Cake

Now that you’ve made your mermaid cake and decorated it with fondant scales, it’s time to add some finishing touches to make it look even more impressive. Here are some ideas for adding those final touches:

Add Some Edible Pearl Dust

Edible pearl dust is a great way to add some subtle shimmer and shine to your cake. You can use a soft brush or a small paintbrush to apply pearl dust on the fondant scales or any other part of the cake.

Create Fondant Seashells

Fondant seashells are easy and fun to make! Roll out white fondant into thin sheets then using seashell candy molds create multiple shapes and sizes of seashells.Once done brush them with edible luster dusts in gold silver or bronze shades for added effect.

Use Edible Glitter

Edible glitter is an excellent way of adding sparkle and shine without overpowering the overall design. You can sprinkle some edible glitter on top of the frosting, around the edges, or even directly onto fondant decorations.

Add Mermaid Tails

Mermaid tails made from coloured fondants are perfect as cake toppings. You can create these by rolling out colored fondants like blue, green,purple etc then cutting them into mermaid tail shapes using cookie cutters.Making use of molds help in achieving detailed designs.

Decorate With Fresh Flowers

Fresh flowers like roses, orchids,hawaiian flowers etc would work well for a beach themed mermaid party.Cover stems with food grade cellophane before inserting them into cakes so they don’t come in contact with frosting directly.

These finishing touches will take your mermaid-themed dessert from good-to-great! So go ahead and experiment creating beautiful cakes that everyone will love!

Making a mermaid-themed cake might seem daunting at first, but with the right tools and techniques, anyone can create a beautiful and impressive dessert that will wow guests. Remember to start by preparing your cake mix then move onto decorating it with buttercream frosting in shades of blue and purple.Then go on to add fondant scales around its sides for an impressive mermaid tail effect.Add finishing touches like edible pearl dusts, fondant seashells or mermaid tails ,edible glitter or even fresh flowers for added effect! With these tips and tricks you are all set to create a beautiful mermaid-themed cake that is sure to be the highlight of any party!


What ingredients do I need to make a mermaid cake?

To make a mermaid cake, you need cake mix, food coloring, frosting, and fondant. You can choose any flavor of cake mix, but a vanilla or white cake mix works well to show off the colors. You can use different shades of blue food coloring to create an ombre effect for the cake layers, and green coloring for the seaweed and mermaid tail. Choose a frosting that complements the cake’s flavors, and also matches the shade of the cake. Fondant is used to create the scales on the mermaid tail and can be bought ready-made or can be made by using marshmallows and powdered sugar.

How do I make a mermaid tail for the cake?

To make a mermaid tail for the cake, take a small piece of fondant and roll it into a thin sausage shape. Then, flatten it and shape it into a tail shape, with a slightly wider end and a curved tip. Next, use a small tool to create scale patterns onto the tail. Once you have the scaling done, paint the tail with green food coloring. Allow the tail to dry completely before placing it on top of the cake to avoid any smudges on the cake.

How can I add sea elements to my mermaid cake?

You can add various sea elements to your mermaid cake. For instance, create seaweed by using piped green frosting and adding sugar pearls for the bubbles on it. In addition, you can make a sugary beach with crushed graham crackers and cookie crumbs, placed on one side of the cake. Some blue frosting along with a few fish-shaped candies on the beach add some finishing touches to your beach. The final touch is adding your made mermaid tail on top of the cake!

How do I decorate the mermaid cake with frosting?

To decorate the mermaid cake with frosting, you can use a piping bag with different tips to create different designs. You can opt for a plain frosting or add some texture to it to reflect scales or waves. Use a palette knife for smoothing and to give a neat finish to your mermaid cake frosting. Use a star tip for swirling a mixture of pink, blue, and purple frosting to the mermaid cake’s base to create a realistic sea effect. Finally, add the elements that you made on top of it to give your mermaid cake a beautiful look.

Jessica Hartley

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