KIT KAT, M & M RETRO CAKE - Aspire Planning Group

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Customer – “Waitress, you’re not fit to serve a pig!”

Waitress – “I’m doing my best sir”

Recently our family celebrated my younger daughter’s 21st birthday at our home. It was a retro themed party which not only included all the guests to arrive in retro period clothes but all the savoury and desserts were recipes of late 50’s to 60’s era. It was so much fun and everyone had just the best time. This cake was just one of many sugar fixes we had to sustain us as we boogied the night away.   The Kit Kat Cake is basically your favourite chocolate cake recipe that’s filled with chocolate buttercream . You can bake the cake and buttercream it ahead of time, just cover with plastic wrap then put in the freezer. You can also substitute the M & M’s for smarties, jelly beans, flakes or mars bars whatever you prefer it is totally up to you.

You will need

  • Two 8 inch round cake baking pans
  • Your favourite chocolate recipe of choice (I used Nigella Lawson’s Old Fashioned Chocolate Cake recipe from her book titled “Feast”, and doubled the recipe.)
  • Chocolate Buttercream Icing
  • 8 to 10 Packet of KING SIZE Kit Kats (Keep them in a cool place until you need them)
  • 3 Packets of M & M’s or filling of your choice

Chocolate Buttercream Icing Recipe

  • 370 g softened butter
  • 4 ½ cup of pure icing sugar, sifted
  • 4 tablespoons milk
  • 4 to 5 tablespoons of good quality cocoa powder (put more if you like a stronger chocolate flavour.)


Using an electric mixer, beat the butter in a bowl until pale and creamy. Gradually add the sifted icing sugar, sifted cocoa and milk beating constantly until combined.

To Assemble

Once the two chocolate cakes are cooked and cooled, remove from baking pan and trim the top of the cake if there is dome shape. Carefully cut both cakes in half then spread each layer evenly with buttercream, stacking one on top of the other until you have a four layered cake. Cover completely around and the top of the cake with the buttercream and put in the fridge or cover with plastic wrap and put in the freezer until the day you need it.

Once you are ready to decorate snap the kit kat’s into pairs and place them around the sides of the cake, pushing them into the buttercream frosting. ( Putting the Kit Kats in pairs around the edge of the cake is a perfect guide when cutting the cake.) Tie your choice of ribbon around the cake as this also provides additional support to the cake and is decorative.

Finally pour in the top of the cake with M & M’s or smarties etc.