How to Make Fondant Seashell Decorations

I’m all about that salt life. I have a weakness for seashells, coral, and everything ocean. So, I was super excited to get these seashell molds for my mermaid themed birthday cake this year. Originally I was going to make seashells out of white chocolate (but… I accidentally burned the white chocolate). So, instead, I decided to make them out of fondant. I used the fondant made by Satin Ice. Their fondant is pretty tasty and an excellent store-bought substitute for days you don’t want to make it yourself.

Seashell mold


  • Easy to make
  • Creates fun and realistic sea shells for cakes


Most crafts stores such as Michaels, JOANN, and Hobby Lobby have molds and fondant to get you started. You can also find molds and fondant on Etsy and Amazon. A very popular one comes in a kit of Mermaid Theme Cake Silicone Molds from Baking World on Amazon. I am using this one to create sea shells.

I decided to keep my sea shells white, but if you would like to color them, I recommend using DecoPac Premium Gel Food Color. This is my favorite food coloring to use because it is highly concentrated and mixes well with nearly any icing.

These fondant decorations do take some time to prep. I suggest making them at least two days in advanced so that they have time to dry and set. Larger decorations will not stay on a cake if they do not set and smaller ones are easy to squish by accident. I made these decorations two days in advanced, and gave them plenty of time to dry.


Vanilla Cake

Vanilla Cupcakes

Vanilla Buttercream

Swiss Meringue Buttercream

Mermaid Tail Pull-A-Part Cupcakes

Cakes of Interest: Dolphin Sheet Cake

Cakes of Interest: Neon Sea Shell Cupcakes

TAG US! Let us know if you try it! Comment and rate! We love seeing your dishes, so tag your photo with #homestylealchemy on Instagram!


  • Plain Fondant
  • Optional: Gel Food Coloring
  • Optional: Edible Luster Dust
  • Optional: Vodka or Lemon Juice
  • Optional: Powdered Sugar for dusting


Silicone seashell mold

Bench scraper or knife

Optional: Paint brush


48 Hours


Create the sea shells

  • Very lightly dust the mold with powdered sugar. After you do this once, you don’t have to dust much again. Rub a light amount of powdered sugar on your hands to help keep the fondant from sticking to your hands. If you don’t like the fondant on your bare hands, you can also work with latex gloves.
  • Press the fondant into the mold, being sure to fill each and every crevice.
  • Use a bench scraper or knife to scrape off excess fondant from the top of the mold. Use your hands to take off excess stuck to the mold.
  • Gently release the sea shells from the mold. It should come out easily. These decorations are delicate, so handle them gently.
  • Place the finished seashells onto a silicone baking sheet or parchment paper and allow the decorations to dry for 24 hours.

Paint the sea shells

In small mixing bowls, mix 1 tsp of vodka with 1 drop of food coloring.

Using a paintbrush, paint the seashells in any color you like.

Be sure to allow the food coloring to dry completely. This may take at least 8 hours.

If you are using luster dust, mix 1/4 tsp of luster dust with 1/2 tsp vodka. Paint a layer of luster dust over the seashells only after they have dried completely.

Do not air brush the sea shells unless they are already on the cake. Doing so will only blow them away and right off your table!


Stick your finished seashells onto cakes or cupcakes!

© 2022 Parker Artistry Brands LLC, All Rights Reserved.

Recommended Articles

Leave a Reply

%d bloggers like this: