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Harry Potter Birthday Cake Recipe | My Harry Potter Kitchen (Recipe #16)

Welcome back to My Harry Potter Kitchen! Home of the Wizarding World food series where I'm reading the Harry Potter books and creating magical Harry Potter recipes for every item of food and drink that we find inside! Last week we served up some Hogwarts House inspired Homemade Crisps!


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This week we're moving on to Chapter Four of the Philosopher's Stone - ' The Keeper of Keys' for a very special recipe!

"Inside was a large, sticky chocolate cake with Happy Birthday Harry written on it in green icing"

Happy Birthday Harry! Or Happee Birthdae Harry as the films depicted! In celebration of Harry Potter's Birthday it's time to create an irresistible recipe inspired by one of the most iconic food items in the Philosopher's Stone


This Harry Potter Birthday Cake recipe uses my best chocolate fudge cake recipe and is stacked with a vibrant bright pink buttercream icing, topped with the signature Happy Birthday (or Happee Birthdae) message in green icing!



Harry Potter Birthday Cake Recipe Ingredients:

(serves 16-20)

For the chocolate fudge cake recipe:

  • 400g golden caster sugar

  • 120g cocoa powder

  • 220g plain flour

  • 5 tsp baking powder

  • pinch of salt

  • 225ml buttermilk

  • 175ml vegetable oil

  • 225ml milk

  • 2 eggs

  • 1 tbsp vanilla

For the buttercream icing:

  • 170g (6oz) butter

  • 340g (12oz) icing sugar

  • 1 tbsp milk

  • 1 tsp vanilla extract

  • pink a green food colouring gel

Harry Potter Birthday Cake Method:

  1. To make the chocolate fudge cake recipe for Harry Potter's Birthday cake we're going to use the reverse creaming method which starts with the dry ingredients. Start by placing your dry ingredients into a bowl - that's the sugar, cocoa, flour, baking powder and salt, mixing through until well combined.

  2. In a separate jug whisk together the wet ingredients - buttermilk, oil, milk, eggs and vanilla until smooth. Make a well in the middle of the dry ingredients and pour the liquid in.

  3. Mix the cake mix together on a low speed until just combined (Wizard Tip! Be careful not to over-mix the cake batter otherwise you'll end up with a tough and chewy cake)

  4. Grease and line 3 baking tins and evenly split the cake batter, levelling off the mixture with a spatula. Bake in the oven at 180c (350F) for 25-30 minutes. (Wizard Tip! You'll know they're baked when a skewer, inserted into the middle, comes out clean)

  5. While the cakes are cooling you can make the buttercream icing by whisking the butter in a bowl until soft and smooth. Add in the icing sugar a bit at a time whisking until well incorporated. Pour in the milk and vanilla and then whisk for a final 1-2 minutes until light and fluffy.

  6. Place approximately 6 tablespoons of icing into a separate bowl and dye green, and then dye the remaining icing pink.

  7. Remove the cakes from the tins and use a serrated knife to level the tops. Place the first cake layer down and spread an even layer of pink buttercream over the top. Sandwich the next layer on top and repeat to stack all the cakes.

  8. Cover the cake with a thin coat of icing and then place in the fridge to set for 1 hour. Repeat with a thicker layer of pink icing using a spatula to smooth the sides and the tops (Wizard Tip! As it's Hagrid's cake that's been travelling a bit you don't have to worry about getting it perfectly smooth!). You can also add some optional swirls or marks on top.

  9. Place the green buttercream icing into a piping bag with a writing nozzle tip and pipe out your Happy Birthday Harry message on top. (Wizard Tip! Practice on some baking paper and scrape back into the piping bag once you're happy with your writing)

And with that our easy Harry Potter Birthday Cake Recipe is complete! It's an amazing gift for Harry Potter fans and you can of course personalise the icing with the name of your favourite witch or wizard!

Planning on giving this Harry Potter recipe a try? Let me know what you think! Follow me on Instagram and share your pictures with the hashtag #MyHarryPotterKitchen - I'd love to see them!


I hope you enjoyed the latest food recipe from the Philosopher's Stone! Be sure to Subscribe to Bradley Bakes on YouTube and click on the notification bell to be the first to see the latest recipes every Magic Monday!


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