Kit Kat Birthday Cake : Pigs in Mud (recipe)

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Tada!  Here’s an outlandishly cool ‘swimming pigs in Kit-kat cake, a tub with chocolate mud. What a great birthday cake! Oh, all that chocolate!!! I’m braking all ‘let’s eat healthy and lose weight’- rules and am posting the recipe for this delicious cake!



image credit: ; upgraded by FineCraftGuild

I guess, in the continued celebration of my Dutch heritage*, here is another Dutch bit of splendor! In putting this post together, I personally translated several different Dutch* recipes, and completed it with conversions of gram to oz, F to C, etc.  Pfft. Am tired now. But, we now have a complete set of usable instructions on how to make this fantastic Pigs in Mud chocolate cake.

I broke it down into two different recipes. The first recipe for the cake filling. It is a wonderful world-wide classic. My family has made this kind of cake filling for decades and it makes the perfect base for this Kit-kat & chocolate covered Pigs-in-Mud cake.

* Today is Liberation day in the Netherlands. These pigs rolling in the mud could not be more free. Hurray.

** Truth: This basic cake is actually not exclusively Dutch. The Italians love this cake and eat it all the time, but they call this type of cake ‘Pan di Spagna’ (Spanish bread).   See how international this recipe is….. Anyhow….

The other recipe teaches you how to transform this basic cake filling and make it into a fabulous birthday cake.  It shows you how to make the chocolate cover and the fondant pigs.

Tip: please do not copy/paste this recipe and post it on your blog. It’s bad karma. Instead, refer to this page here. Thank you so much.


Cake Filling Recipe

  • 5 eggs
  • 125 gr sugar (125 g or lil’ bit over 1/2 cup)
  • 125 gr cake flour *125 gr or just under 1.5 cup)


  • Preheat the oven to 200 degrees C. (How many degrees F is 200 Celsius ? 390 F)
  • Prep a cake form by lining it with butter and dust it with some flour. (20 cm or almost 8”)
  • Tip: ensure your cake-making tools like your scale and mixing bowl are super clean and non-greasy. Otherwise your egg mixture will never properly rise, no matter how long you mix it!

Step-by-step Instructions for Cake Filling

  1. Mix the sugar and the eggs till your mixture is airy and white.  This will take some time.
  2. Sift the flour and gently fold it into your egg mixture.
  3. Pour the mixture into your prepared cake tin and bake the cake filling for about 30 min.  It’s ready when the top of the cake is spongy.
  4. Sprinkle some sugar onto the cake and let it cool down on a tea towel.

    Preparation Pigs in Mud – Kit Kat Chocolate Cake

    • A basic cake (as above)
    • Two large bars of milk chocolate  (200g  or 7 oz.)
    • Whip cream (350 ml or 1.5 cup)
    • Filling for our your cake, like whip cream, butter cream, marmalade
    • Three 5-packs Kit kat
    • Pack of 250 g of light pink marzipan (250 g or  8.75 oz). Or use
      Wilton Icing Colors 1 Oz: Rose Petal and Niederegger White Marzipan Loaf, 2.6-Ounce Package (Pack of 4). You’ll also need a large knife to cut the cake into layers, a tooth pick to make pig eyes, a ribbon to hold the Kit kats together and a cake presentation tray.


      image credit: Fiona, upgraded by FineCraftGuild

      Step-by-Step Cake Making Instructions

        1. Prepare the pigs ahead of time.   Roll the marzipan with your hands to create the shapes. The various shapes that you’ll need are displayed in the image.

        2. Heat the whip cream in a pan on low heat and stir it from time to time till just before it boils. Turn off the heat. Meanwhile, break the chocolate bars into small pieces and add the chocolate to the cream while the heat is off. Stir till you have a smooth texture.  Let it cool and thicken, which may take a little while.

      3. Meanwhile, break the Kit kat bars into individual chocolate sticks, and set aside.

      4. Cut your cake base into two layers and fill it with your filling of choice.Tip: Make it easy for yourself and ensure that your cake base is on a foundation which can be rotated easily, like a cutting board, tray or large plate. This will help you in spreading the chocolate onto the sides of the cake. 

      5. When your chocolate mixture is thickened sufficiently so that it is still spreadable but holds some form, you can begin spreading the mixture onto the sides of the cake with the back of a knife.

    6. When your cake is completely covered with chocolate, stick the Kit Kat bars onto the lined cake sides, going all around the cake. Give them a slight angle so that they somewhat lean on the top –side of the cake to prevent them from falling off while you are doing your work. When done, immediately add the ribbon so that the chocolate sticks all stay up nice and straight.

    7. Pour the remainder of the chocolate mixture over your cake. At this point the mixture should be already quite firm but still fluid. Be patient and wait till it’s thickened enough. If your mixtures is too thin, it may seep in between your Kit kat bars.

    8. Place your marzipan pigs into the chocolate while it is still soft and place your cake in the fridge for 1 hour.

    When cooled, place cake onto a pretty presentation tray and serve.



    Tip: if you are lucky enough to live in the Netherlands, you could order a cake by Fiona. On her Facebook page you can see lots of original birthday cakes and cakes for special events.  All beautifully executed. Many are whimsical, although dare I say, this swimming pigs in Kit kat cake with chocolate mud is the true winner! Which kid / adult would not be happy getting this Kit kat pig cake for his/her birthday??!

    Looking for complementary party food? Try these healthy snacks : homemade fruit popsicles for the kids and caffe latte popsicles for the grownups.


    If this pigs-in-mud kit kat cake decoration looks too much of a challenge, do not despair. Here is a much simpler version of a kit kat cake. My new friend in London who just made this great birthday kit kat cake told me it took her just 30 minutes to put this one together (after she made the filling, of course). Yes, she is really gifted, but even if it took you 45 minutes to an hour to decorate it, it would still be worth it.

    kit kat cake

    …. Ever seen a close-up of an M&M kit kat cake? Oh may….
    mm kit kat cake

    And if you have this M&M kit kat cake down-pat (is that how you spell it?) then have a try at this M&M rainbow cake.


    Enhance Your Cake Making Skills

    Online Cake Decorating Class
    Always wanted to learn how to make a good looking cake? Here is your chance. These classes are well-recommended and you will actually find a whole slew of different kind of baking courses when you click the link / image below. Sign up for the workshop that suits you best. You will enjoy it. They are very inexpensive compared to going to a Community college to learn similar professional courses. Courses are at varying levels, so you can start at the beginners level and then work your way up to doing more advance cake decorating and other baking techniques.



    1. Michele, says:

      Oh my GOODNESS!!! That is THE most adorable cake EVER!!! I’m totally pinning!

    2. This is the cutest thing ever!

    3. I love this cake! Adorable!

    4. Totally adorable! I would love it if you would share this at Party In Polka Dots! My blog is called Piggy In Polka Dots so this is very fitting…;)

      Super cute! I hope you share it at the party!



    6. That is so cute! May I pin it?

    7. My niece wants me to make this for her. I’m gonna try it. Hope it comes out good

    8. The crust turned out too thin. Why so little flour?

    9. cake maker says:

      Do we put butter in the cake?

    10. No. Think of it as a really light angel food cake.

    11. Little flour because lots of flour be too heavy. It’s an angel food cake of sorts.

    12. of course!

    13. Omg! This funny in the most adorable way, pretty awsome cake I gotta say!

    14. Thanks for your comment, Crystal. Are you going to make one?

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