Sirius Black’s Tropical Fruit Cake | Harry Potter Inspired Recipes

The Starving Chef is supported by Hungry People like you. When you make a purchase through an affiliate link on my site, I may earn a little bit of cash on the side (at no extra cost to you) to help keep my kitchen running. Read our disclosures here.

tropical fruit cake harry potter

Harry Potter and the Prisoner of Azkaban holds a special place in my heart, largely due to Sirius Black’s captivating character. From the moment I delved into the series, this seemingly dark character turned out to be a favorite of mine.

Growing up, the world of Harry Potter played a significant role in shaping who I am today. In fact, I took it upon myself to recreate all the birthday cakes Harry receives in the books!

hedwig in cage

To truly immerse myself in the magical experience, I embarked on a trip to Kings Cross Station at the Wizarding World of Harry Potter in Florida last summer.

In The Goblet of Fire, as Sirius evades capture, he sends Harry postcards carried by majestic tropical birds (much to Hedwig’s chagrin!). With this in mind, I aimed to create a cake that captures the whimsy and fun of those postcards, while being irresistibly sweet!

ingredients for tropical fruit cake

Here’s What You Need

For Citrus Cake:

  • Flour: Provides structure and texture to the cake.
  • Sugar: Sweetens the cake and contributes to its texture and moisture.
  • Baking powder: Acts as a leavening agent to help the cake rise.
  • Butter: Adds richness and flavor to the cake batter.
  • Milk: Provides moisture and helps create a tender crumb.
  • Egg yolks: Add richness and contribute to the structure of the cake.
  • Egg whites: Whipped to stiff peaks, they help create a light and airy texture.
  • Lemon zest: Adds a bright and citrusy flavor to the cake.
  • Orange zest: Provides a fresh and tangy citrus flavor.
  • Vanilla extract: Enhances the overall flavor of the cake.

For Mango Filling:

  • Mango: Adds a tropical and sweet flavor to the filling.
  • Sugar: Sweetens the filling and helps thicken it.
  • Water: Provides moisture and helps create a smooth consistency.
  • Cornstarch: Thickens the filling and gives it a creamy texture.
  • Butter: Adds richness and enhances the flavor of the filling.
  • Lemon juice: Balances the sweetness and adds a tangy note.

For Whipped Cream Frosting:

  • Heavy cream: Whipped to create a fluffy and creamy frosting.
  • Powdered sugar: Sweetens the frosting and helps stabilize it.
  • Vanilla extract: Adds flavor to the frosting.
  • Yellow food coloring: Gives the frosting a vibrant yellow hue.

Let’s Get Started

have you seen this wizard poster

To start, cream together butter, milk, sugar, yolks, vanilla, and fruit zests. Gradually incorporate the dry ingredients, blending until the batter becomes smooth.

whipping citrus

In a separate bowl, whip egg whites and confectioner’s sugar until they form stiff peaks. There’s something oddly satisfying about achieving this delicate texture!

whisking eggs
frothy eggs
firming up eggs
soft peak eggs

Once the batter is ready…

making cake batter

…carefully fold in the whipped egg whites, ensuring the batter lightens without being completely mixed.

folding eggs

For the tantalizing mango filling, begin by juicing fresh mangoes. If a juicer is unavailable, you can alternatively puree the mangoes using a food processor. Or, if you prefer, you can save time by purchasing ready-made mango juice!

juicer making fresh juice

Combine the mango juice with sugar, water, and lemon juice in a small pan. Heat the mixture over medium-low heat, stirring until it becomes creamy and just begins to boil. Once done, remove from the heat and let it cool. If you’re feeling adventurous, you can add chunks of mango or oranges for an extra burst of flavor.

simmering liquids

Divide the cake batter evenly into ramekins and bake at 350°F for 20-25 minutes, or until the cakes turn a delightful golden brown. Let them cool in the ramekins for 10 minutes before gently transferring them to a cooling rack. Once completely cooled, spread the luscious mango filling between the cake layers, and let your creativity shine as you decorate with icing.

Helpful Tips & Tricks

  • Room temperature ingredients: Ensure that the butter, egg yolks, and egg whites are at room temperature. This helps with proper mixing and achieving a smooth batter.
  • Whipping egg whites: When whipping the egg whites, make sure the mixing bowl and beaters are clean and free of any oil or residue. Even a small amount of fat can prevent the egg whites from reaching stiff peaks.
  • Gentle folding: When incorporating the whipped egg whites into the cake batter, use a gentle folding motion to maintain the airiness. Overmixing can deflate the egg whites and result in a denser texture.
  • Proper greasing: Grease the ramekins well to ensure easy release of the cakes after baking. Consider using butter or non-stick cooking spray for effective greasing.
  • Cooling the cakes: Allow the cakes to cool in the ramekins for about 10 minutes before transferring them to a cooling rack. This helps the cakes set and prevents them from breaking apart.
  • Thickening the mango filling: If the mango filling is not thickening to the desired consistency, you can mix a small amount of cornstarch with water separately to create a slurry. Add the slurry to the simmering mango mixture while stirring continuously until the desired thickness is achieved.
  • Stabilizing the whipped cream frosting: To ensure the whipped cream frosting holds its shape, make sure the heavy cream is cold. Place the mixing bowl and beaters in the refrigerator for a few minutes before whipping. Additionally, you can add a stabilizer like gelatin or cream of tartar to help maintain the whipped cream’s structure.
  • Decorating with finesse: Use a piping bag and a suitable icing tip to create beautiful designs on the cake. Start with a light touch and practice on a separate surface before decorating the cake. Remember, it’s all about creativity and having fun!
sirius black tropical fruit cake

Alright, my fellow Hungry People, it’s time to wrap things up with a touch of Harry Potter magic and a nod to our beloved Sirius Black.

I hope this Tropical Fruit Cake recipe has ignited your curiosity and transported you to the whimsical world of Harry Potter. Just like Sirius Black himself, this cake is full of surprises, with its citrusy goodness, tropical mango filling, and creamy whipped cream frosting.

Remember, life is all about embracing the unexpected, just like discovering the true nature of Sirius Black in the series. So, keep that sense of adventure alive in your kitchen and let your taste buds embark on a spellbinding journey.

Whether you’re baking for a special occasion or simply treating yourself, this cake will add a touch of magic to your day. So grab your apron, don your wizarding hat (if you have one), and get ready to create a dessert fit for a wizard or witch.

sirius black cake from harry potter

And hey, if you’re hungry for more Harry Potter-inspired delights, make sure to check out my blog for other enchanting recipes. I promise you’ll find plenty of tasty treats to satisfy your cravings.

As we say goodbye for now, remember to keep the spirit of Sirius Black alive in your heart – always ready to challenge assumptions, embrace the extraordinary, and, of course, enjoy a delicious slice of cake.

Until next time, my friends, keep cooking up magic in your kitchen and may your culinary adventures be as exciting as the pages of Harry Potter. Happy baking!

Check out all of my Harry Potter cake creations here!

sirius black harry potter birthday cake

Sirius Black’s Tropical Fruit Cake | Harry Potter Inspired Recipes

The Starving Chef
Transport yourself to the Wizarding World with this magical Sirius Black's Tropical Fruit Cake, inspired by Harry Potter and the Prisoner of Azkaban, featuring a citrus-infused cake, delightful mango filling, and a spellbinding whipped cream frosting!
Prep Time 20 minutes
Cook Time 20 minutes
Cooling Time 1 hour
Total Time 1 hour 40 minutes
Course Dessert, Fictional Feasts
Cuisine Cake, Harry Potter Inspired
Servings 4



  • 1 cup flour
  • ½ cup sugar
  • 1 teaspoon baking powder
  • 8 tablespoons butter room temperature
  • ¼ cup whole milk
  • 2 egg yolks room temperature
  • 2 egg whites
  • 1 teaspoons lemon zest
  • 1 teaspoon orange zest
  • 1 teaspoon vanilla extract
  • pinch salt


  • 1 cup mango diced
  • ¼ cup sugar
  • ¼ cup water
  • 1 tablespoon cornstarch
  • 2 tablespoons butter
  • 1 tablespoon lemon juice



  • Preheat the oven to 350F Preheat the oven to 350°F and grease 3 ramekins. In a small bowl, combine the flour, baking powder, and a pinch of salt.and grease 3 ramekins. In a small bowl, combine the flour, baking powder, and a pinch of salt.
  • Cream together the butter, milk, sugar, yolks, vanilla, and fruit zests. Slowly add your dry ingredients and blend until smooth.
  • Use a hand mixer to whip together the egg whites and confectioners sugar until stiff peaks begin to form. Gently fold the whipped eggs into the flour batter until just mixed in.
  • Separate into the ramekins and cook for 20 minutes at 350°F or until golden brown on top.
  • Add the mango, sugar, water, cornstarch, butter, and lemon juice to a small pan and heat over medium-low heat until simmering. Stir until creamy and just beginning to boil, then remove from the heat and let cool. Add chunks of mango and/or oranges and stir to combine.
  • Prepare the icing by combining the heavy cream, powdered sugar, and vanilla extract together in a bowl and whipping with a hand mixer until smooth and thick.
  • Let the cakes cool in the ramekins for 10 minutes before tipping out onto a cooling rack. When the cakes are completely cooled, spread the cooled mango filling between each layer, then decorate with icing. Use a piping bag and yellow icing to make designs on the cake. Chill until ready to serve.
Keyword cake, citrus, Harry Potter, mango
Tried this recipe?Let us know how it was!