Mermaid Layer Cake with Vanilla Buttercream (2024)

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This mermaid cake with vanilla buttercream frosting is so simple to make you won’t believe it and so fun to eat you won’t be able to stop at one slice! (PS, the pearls on top are a must.)

Mermaid Layer Cake with Vanilla Buttercream (1)

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You guys, I have a bit of news. It’s scary stuff so prepare yourselves.

It’s almost April. As in the month that follows March. Easter is almost here! (And I hope you have a wonderful holiday if you celebrate.)

I’m excited for berry season because I have some fabulous fruity desserts planned but I’m terrified at how fast time is passing.

Good thing I have cake, right? 🙂

This mermaid cake was inspired by my love of all things colorful and sprinkle-topped. I posted these unicorn sugar cookies last year and they’re the most popular recipe on my blog.

Clearly I’m not the only one who loves sprinkles! So I decided to hop on the mermaid trend. As far as I can tell, it’s the same as the unicorn trend but with a different color scheme.

And guess what? Food that has been mermaid-ed is equally as delicious as food that has been unicorn-ified.

I know what you’re thinking. This cake, with its multiple colors, must be complicated to make. But it ISN’T! It’s super easy. It starts with a white cake mix. Then you dye one third blue, one third green, and leave the rest white. Spoon the batter into your pans about 1/4 cup at a time, layering the colors over each other. A little illustration:

Mermaid Layer Cake with Vanilla Buttercream (2)

Shake the pans now and then to help the batter stay even and once you’ve used all the batter gently shake the pans so the batter reaches the edges. Then bake. Then frost, then devour.

Speaking of frosting, I like to use clear vanilla when I’m going to dye my frosting because that way I get a true color. You can substitute regular vanilla extract if you want.

I used this green food coloring and this teal food coloring for my cake. I like to use gel because the color is much more vivid. This is the purple food coloring I used for the frosting.

Because I’m 99% sure all mermaids wear pearl necklaces (that just makes sense right?) the little white sugar pearls on top of the cake are a necessity. I used green and blue sprinkles too but the pearls seemed the most crucial.

OK, now that you know how crazy easy a mermaid cake can be, what the heck are you waiting for? Go bake one! It’s impossible to worry about the rapid passage of time when you have a bright purple cake staring you in the face.

Mermaid Layer Cake with Vanilla Buttercream (3)

Mermaid Layer Cake with Vanilla Buttercream (4)

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Mermaid Cake with Vanilla Buttercream

Prep Time

20 mins

Cook Time

30 mins

Cooling Time

3 hrs

Total Time

3 hrs 50 mins

This mermaid cake is delicious and easy to make because it uses a box cake mix. Just don’t forget the sprinkles!

Course:Dessert

Cuisine:American

Servings: 8

Author: Kelsie

Ingredients

Cake:

  • 115.25-ounce box white cake mix
  • 13-ounce box vanilla or white chocolate pudding
  • 1cupsour cream
  • 3/4cupvegetable oil
  • 1/2cupwhole milk
  • 4large egg whites
  • blue and green gel food coloring

Frosting:

  • 1cupunsalted butterat room temperature
  • 4 1/2 to 5cupspowdered sugar
  • 2 to 5tablespoonsmilk or heavy cream
  • 1tablespoonclear vanilla extractcan substitute regular
  • 1/4teaspoonsalt
  • Purple gel food coloring
  • Sprinkles

Instructions

Cake:

  1. Preheat the oven to 350 degrees. Spray 2 8-inch round cake pans with cooking spray. Line the bottoms of the pans with parchment, then spray the pans again and lightly dust with flour. Set aside.

  2. Combine the cake mix, pudding mix, sour cream, vegetable oil, milk, and egg whites in a large mixing bowl. Beat with an electric mixer set to medium until smooth.

  3. Divide the batter evenly between three mixing bowls (each bowl will have about 1 2/3 cups batter). Stir blue food coloring into one and green into another. Leave one bowl white.

  4. Drop a large spoonful (about 3 to 4 tablespoons) of blue batter into one of the pans. Top with a large spoonful of green, then a large spoonful of white. Continue going in that pattern until you’ve used about half of each color. Jiggle the pan now and then so the batter evens out. Repeat with the second pan. Once you’ve used all the batter, gently shake them so the batter goes all the way to the edge of the pans.

  5. Bake 30 to 34 minutes, until a toothpick inserted into the center of the pans comes out clean. Cool in pans for 10 minutes, then remove cakes to a wire rack to cool completely before frosting.

Frosting:

  1. Place the butter in the bowl of a stand mixer fitted with the paddle attachment and beat until very smooth. Add 4 1/2 cups of the powdered sugar, 2 tablespoons of the milk or cream, and the vanilla and salt. Mix on low until well combined then add food coloring to achieve desired color. Turn mixer to high for 3 to 4 minutes, beating until frosting is very light and fluffy. Add additional powdered sugar if frosting is too thin and additional milk or cream if it is too thick.

Assembly:

  1. If your cakes have domed, use a long serrated knife to even them out. Place one layer on a cake stand or cardboard cake circle and spread frosting in an even layer over the top. Top with second cake layer and cover cake with a thin layer of frosting. Refrigerate until frosting is set (this is your crumb coat and will prevent crumbs from getting into your final layer of frosting). Use remaining frosting to frost and decorate as desired. Serve and enjoy.

Related

Mermaid Layer Cake with Vanilla Buttercream (2024)

FAQs

What's the difference between vanilla icing and vanilla buttercream? ›

The best way to distinguish frosting from buttercream is through the ingredients. While both contain powdered sugar, fat, flavouring and sometimes milk or water, frosting does not contain any butter whatsoever. Instead, frosting is usually made with shortening or cream cheese.

Can you use buttercream to layer cake? ›

I recommend you use about 1.5 heaping cups of buttercream between each cake layer and reserve the last 3 cups for outside the cake. If you are going to add a filling such as raspberry cake filling, you'll use less frosting between the layers.

What pairs well with vanilla buttercream? ›

Favorite Cake Flavor Combinations
  • Chocolate cake layered with vanilla buttercream.
  • Chocolate truffle: chocolate cake layered with chocolate mousse and chocolate ganache with a buttercream or ganache coverture.
  • Vanilla with vanilla buttercream.
  • Almond cake with almond buttercream.

What buttercream do professional bakers use? ›

Both Swiss Meringue Buttercream and Italian Meringue Buttercream are commonly used by professional bakers, with Swiss meringue being slightly more popular. Both these buttercreams are made by whipping granulated sugar and egg whites into a meringue and then whipping butter into that meringue.

What is the most stable buttercream for cake decorating? ›

The most stable of the buttercreams, Italian buttercream is made from a meringue made bystreaming hot sugar syrup into egg whites as they're being whisked.

Which buttercream is best for covering a cake? ›

American Buttercream

This is the 'frosting' that seems to be used the most and is the simplest to make. Featuring butter, icing sugar and a splash of milk or cream for consistency, American buttercream is great for filling cakes, covering cakes and topping cupcakes.

What cake is best with buttercream frosting? ›

Here are some other great buttercream and cake flavor combinations to try!
  • Lemon Poppy Seed Cake with Lemon Buttercream.
  • Apple Pie Cupcakes with Cinnamon Buttercream.
  • Sweet Potato Cake with Marshmallow Frosting.
  • Gingerbread Cake with Mocha Buttercream.
  • Pumpkin Spice Cake with Cream Cheese Frosting.
May 26, 2023

How much buttercream icing for a 3 layer cake? ›

You'll need about 3-4 cups of buttercream for a three-layer 6-inch cake, and 4-5 cups of buttercream for a three-layer 8-inch cake.

What not to do with buttercream? ›

5 Mistakes to Avoid When Making Buttercream
  1. Starting with cold butter. ...
  2. Using a butter substitute. ...
  3. Using the wrong type of sugar for the job. ...
  4. Adding too much liquid. ...
  5. Giving up on your broken buttercream.

What to put in between cake layers to keep moist? ›

By easy, I mean easy: Poke your loaf cake or layer cake (with a skewer, cake tester, or toothpick), then use a pastry brush to coat it generously with simple syrup, which will soak into the crumb through the channels you just created. That's it: You've successfully completed a “cake soak.”

What to put in the middle of cake layers? ›

34+ Best Cake Filling Recipes
  1. Salted Caramel Sauce.
  2. Strawberry Compote (20 Minutes)
  3. Nutella Buttercream Frosting.
  4. Chocolate Fudge Frosting.
  5. Caramel Pecan Cheesecake Topping.
  6. Mascarpone Whipped Cream.
  7. Chocolate Whipped Cream Frosting.
  8. Oreo Whipped Cream.
Aug 15, 2023

What kind of icing do professionals use? ›

Fondant icing is a sugar paste and a classic choice for decorating cakes because it provides a smooth and professional look. There are three types of fondant: rolled fondant, marshmallow fondant, and poured fondant. They are all used for coating sponges and pastries but will provide slightly different results.

Can I leave buttercream out overnight? ›

Yes, you can store buttercream at room temperature, but only for up to two days. So it's fine to leave out overnight, if you've made it ahead of time for a cake the next day. The high amount of fat in the butter, combined with a hefty amount of sugar, will keep the buttercream from spoiling quickly.

How far in advance can you decorate a cake with buttercream? ›

But generally speaking, you can prepare a cake with buttercream frosting up to three days beforehand. You can freeze the cake if you need to prepare it further in advance. Cakes with buttercream icing should be wrapped tightly in plastic wrap first, followed by aluminium foil, before freezing.

Is icing and buttercream the same? ›

If you're searching for a more buttery taste, frosting is the way to go. Instead of using a sugar base like icing, frosting usually starts with butter, hence the name "buttercream." The thicker ingredients used to create frosting result in a thick and fluffy result.

Which is sweeter buttercream or icing? ›

Buttercream is also a little bit sweeter, so it may be the ideal supplement for a baked good that you want to be extra sugary like a cookie or brownie.

How to use Betty Crocker vanilla buttercream style icing? ›

Preparation and Usage

Stir ready to spread icing, at room temperature, with a rounded knife To ice: Spread or pipe onto your cooled Betty Crocker? cake or cupcakes. To glaze: 1. Spread a very thin layer (about 1/3 of the tub) on top of the cooled cake 2.

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