Perry the Platypus Cake Tutorial: The Prep Work

[15 Jun 2010 | By | 16 Comment(s) | 61,330 views ]

[Part 2 is here]

I have a request for the tutorial to make the Perry the Platypus Cake, and since it’s needed in a hurry, I’m doing this tutorial in two parts.  By the way, I did a really detailed tutorial on last year’s dragon cake, and this year’s cake is actually similar, if a little simpler. So it wouldn’t be a bad idea to read through that tutorial in case I miss anything I covered there, as far as techniques.

More pics of the cake and the party here!

We’ll start with the prep work: assembling your hardware, getting the shopping done, and making ahead the components!


  • 8.5″x4.5″ loaf pan
  • second loaf pan or cupcake pan
  • 9×12″ rectangular pan
  • Rolling Pin
  • Parchment paper (optional, but helpful)
  • Large piece of cardboard, covered in foil, freezer paper or other paper, for cake board. ~24″x18″

Shopping List:

  • 1 16 oz bag Marshmallows
  • 2 lb powdered sugar
  • Crisco
  • Corn starch
  • 1 8oz pkg cream cheese or Neufchâtel cheese
  • vanilla
  • 1 stick butter
  • Pound Cake Ingredients
  • Ingredients for base case (1-2 boxes cake mix or your favorite recipe)
  • Food coloring (I used this one for the black and the green: Wilton Garden Candy Color Set, and some cheap yellow and red gel coloring.)
  • Brown food coloring, or 1 bar dark chocolate.
  • Vanilla or other light colored tootsie rolls (our local Dollar Tree had a two pack of the large sticks, which was more than enough)
  • Wooden skewers (short ones are fine)
  • Candy for base cake decoration (I used jelly bellies, but anything would work.  Green candies or green coconut would make a nice ‘grass’ effect)

Make ahead:

Set out your butter and cream cheese to soften.

Bake your first cake (ours was chocolate!) to serve as the ground that Perry lays on.  I used a box mix for this, and i think 1 box in a 13×9 pan was a maybe a little skimpy.  So you might want to consider making up 2 batches, and using 1.5 for the cake, and doing the rest as cupcakes.  Let cool thoroughly.

Bake your second cake, in a loaf pan, 3/4 filled. (here’s the recipe – with this recipe you’ll have enough for the loaf pan, plus some extra cupcakes) You want it as tall as possible, so err on the side of overfilling (Place a sheet pan under the loaf pan to catch any spillage). Bake the remainder of your second cake batter as cupcakes, or in your second loaf pan.  You’ll need some extra cake later, so save the extras, don’t eat them yet!
I like to use a sling of parchment paper as a liner to ensure ease of removal from the pans.  Just cut a sheet of parchment paper as wide as your pan is long, but long enough so that if set inside the pan, it hangs over both sides.  Spray the pan with non-stick spray, and  press the parchment.  If necessary, secure the sides with binder clips to keep the parchment in place and pressed against the sides of the pan.

Allow cakes to cool thoroughly.

You can go ahead and make up your batch of icing.  I like Cream Cheese Icing — here’s a quick recipe:  Cream together in mixer : 8 oz cream cheese, 1 stick butter (both softened).  Add 1 teas vanilla.  Slowly add 1 lb powdered (icing) sugar.  Beat until smooth.

Place your base cake on the cake board,  and frost the base cake.  Reserve at least 1/3 of the icing for later use.

Make up your batch of Marshmallow fondant and place in the refrigerator, wrapped tightly according to the directions.  Don’t color it yet.

You’re all prepped and ready to go!

Next we’ll assemble and decorate your Perry cake… go here!

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16 Comment(s) »

  • Joanna [] :

    Oh my goodness, I love you! Perry is the best! I can’t think of a better birthday than Star Wars with Perry. I’m definitely making this cake soon!

  • Dot [] (author) :

    If you make it, you’ve got to send me pics!

  • TheAngelForever [] :

    Oh my goodness, this is so fabulous! My son is a huge Perry fan. I have a feeling if he sees this I will be making a Perry cake for his birthday this summer. Thank you for sharing :)

  • Todd Perlmutter [] (elsewhere) discussed this :

    Dabbled » Article » Perry the Platypus Cake Tutorial: The Prep Work

  • Rosy Parrish [] (elsewhere) discussed this :


  • Amanda [] :

    love your perry cake.
    I was looking for a perry for my childs birthday and this fits the bill. Thank you for posting it.

  • Dot [] (author) :

    great to hear!

  • Kim Millard [] :

    Thanks for all your instructions! I made this for my daughters birthday and it was a hit!

  • Bridget [] :

    Thank you so much for this! OMG the cake was so perfect for my son’s birthday party. I can not be more grateful for your step by step instructions! They were so fabulous. I had never heard of marshmallow fondant until I read your post. I love it and it tastes great.
    I’m posting this before we actually cut into the cake, to be honest I don’t want to cut it, it looks too darn cute!
    THanks again!!

  • Ericka Strange [] (elsewhere) discussed this :

    Para mi cumpleaños quiero una fiesta de Phineas & Ferb. Quiero mi pastel de Perry (cc. @DanielleLupin y @ElDrSinTwitt)

  • Caleb [] :

    I totally failed on this..I guess that’s what happens when you let two 12 year olds make a cake. I mean, I dropped to the floor, Perry Cake crumbling in my hands, fondant melting down my legs, and tears streaming down my face. It was so dramatic.

  • Dot [] (author) :

    Well, at least you had fun!! :)

  • Kara [] :

    I made this cake today for my sister’s birthday! With a few changes :p

    I just frosted Perry with a frosting I tinted his perry-color, and instead of using fondant for the tail, feet, bill, etc…I just softened the vanilla tootsie rolls and kneaded in food coloring! all in all…it was a lot of work, but so much fun to do! Thanks for the tutorial! My sister screamed when she saw it!

  • Lexie [] :

    Thanks for the great tutorial. I just made this for my daughter’s birthday and it was a hit! All the kids at the party loved it and were asking for Perry’s eyes, legs, etc. Thanks for the help!

  • Jeremy Gardner [] (elsewhere) discussed this : @caitt_dapson

  • Jeremy Gardner [] (elsewhere) discussed this :

    did i ever show you this @caitt_dapson?