Mermaid Birthday Cake

A beautiful Mermaid cake that any little girl would love for her birthday. from #DietersDownfall.comDecorating a Mermaid Inspired Cake

My daughter and I are on vacation in Hawaii. I don’t know why I didn’t get this post done ahead of time… well, that’s not the truth. The truth is I was too lazy to get this done before I left and talked myself into thinking that I could do it when I got here.

Well, I’ve been traveling ALL DAY and I’m so tired that I just want to pass out, but I don’t want to be up at 3 am. So I’m staying up until 8pm before falling into bed.

Multiple shades of green and blue make up this Mermaid inspired cake. from This mermaid cake was piece of cake!

Once the cake had a nice, clean crumb coat on and the fondant was made, it took me only 2 hours to decorate it. Trust me, this was faster and easier than a petal cake. My hand cramped something fierce when I made that cake.

Mermaid Scales decorated with glitter. from #DietersDownfall.comIt does take some time to cut out all the little circles, and yes, that was a bit of a pain. However, the results were amazing . I loved it and more importantly, the birthday girls loved it.

A Mermaid inspired cake for a special birthday party. from #DietersDownfall.comI used the green and blue fondant that was colored with the jello, but I also supplemented the dark green and light turquoise/ sea-foam color from some premade fondant.   I really liked the added color intermixed.

The brighter blue and green color was achieved by added pearl dust to the circles. In all, there are six different shades of green and blue on this cake.

Then, just to add a little extra sparkle, I added some gold disco dustover top. Just because every birthday cake should shimmer!

1 dd Mermaid Cake (14)

Mermaid Birthday Cake
This Mermaid inspired cake made the best birthday cake for a 9 year old and 12 year old celebration!
  1. Have you cake covered in your frosting and in the fridge.
  2. Prepare your plastic mat with a thin layer of shortening to prevent the fondant from sticking.
  3. Break off a chunk of the jello fondant (a little larger than a golf ball) and warm it up in your hands. Roll smooth using the guides on the roller to get it even. Use the piping tip to cut out circles.
  4. Set half aside and add a thin layer of luster dust over them with a dry paint brush.
  5. Continue to make circle cut outs with all the colors you intend to use. I used about 75% more jello fondant than premade fondant.
  6. Start at the bottom of the cake and randomly add circles to the base. The should stick to the buttercream frosting without need for any other adherent.
  7. Offset the second row and continue around the cake. I had 5 rows going around my cake, the last one, bending over from the top down the side.
  8. For the top, start at the outer perimeter and go around in an overlapping fashion. Continue to build toward the center, then overlap the final circles in the center as best as possible.
  9. Cover and refrigerate until ready to sing Happy Birthday..


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  1. Hi stopping by from nifty thrifty things linky

    this is amazing and you make it look so easy 😀

    definitely pinning 😀

    Shel @ Sweet Petite

  2. Wow, what a beautiful cake. You must be the best Mom.
    Visiting from Saturday Night Fever,

  3. This cake is lovely! I have not been a big fondant fan, but I sure like what you have created here!

  4. I might just attempt this for my daughters first birthday party! I’m planning on doing an under the sea theme – this will match perfectly! Thanks for the grand idea! Just started following you on Google+ and Facebook!

    • Karyn Granrud Karyn Granrud says:

      It would be a great cake for her! It’s so easy to make. If you have any questions, please send me an email. Thanks for following :)

  5. Stopping by from Artsy Corner Link party. This is beautiful! Loving the the scallop look this year. Pinning :)

  6. This cake is amazing! I need to try my hand at fondant, I never have attempted it…

  7. This cake is absolutely GORGEOUS!!

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