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Harry Potter Birthday Cake

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πŸ§™β€β™‚οΈ A super chocolatey, fudgy cake inspired by Hagrid’s iconic birthday cake from Harry Potter and the Sorcerer’s Stone, made with Dutch process cocoa and buttermilk for an incredibly moist crumb.
🧈 Topped with a magical butterbeer buttercream frosting made from melted butterscotch chips, then finished with pink icing and green “Happee Birthdae Harry” lettering just like in the movie.

  • Total Time: 1 hour 45 minutes
  • Yield: 1 two-layer 8-inch cake (10 to 12 servings) 1x

Ingredients

Scale

1 3/4 cups all purpose flour

3/4 cup Dutch process cocoa powder

2 teaspoons baking powder

1 teaspoon baking soda

1/2 teaspoon salt

1 cup unsalted butter, softened

1 3/4 cups granulated sugar

3 large eggs

2 teaspoons vanilla extract

1 cup buttermilk

1/2 cup hot coffee

1 1/2 cups unsalted butter, softened (for frosting)

1/2 cup butterscotch chips

4 cups powdered sugar

1 teaspoon butter extract

1 teaspoon vanilla extract (for frosting)

Pink gel food coloring

Green gel food coloring

1/4 teaspoon cocoa powder (for darkening green frosting)

Instructions

1-Mix dry ingredients: Whisk together flour, cocoa powder, baking powder, baking soda, and salt; set aside.

2-Cream butter and sugar: Cream butter and sugar on medium speed for 3-4 minutes until light and fluffy.

3-Add eggs and vanilla: Add eggs one at a time, then vanilla; mix 2-3 minutes until pale and fluffy.

4-Alternate dry ingredients and buttermilk: Alternately add dry ingredients and buttermilk, starting and ending with dry; mix on low just until combined.

5-Add hot coffee: Add hot coffee on low speed and mix until batter is smooth.

6-Bake cakes: Divide batter between two greased 8-inch round pans. Bake at 350Β°F for 33-37 minutes until a toothpick comes out clean.

7-Cool cakes: Cool in pans 5 minutes, then invert onto a wire rack to cool completely.

8-Make frosting base: For frosting, cream butter 5-10 minutes until pale and fluffy. Melt butterscotch chips, cool slightly, then mix into butter.

9-Finish frosting: Gradually sift in powdered sugar, then add butter and vanilla extracts; mix until smooth and creamy.

10-Color frosting: Divide frosting; color one part pink, the other green (add 1/4 tsp cocoa powder for darker green).

Last Step:

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Notes

πŸ’‘ Chill the crumb coat for 20 minutes before applying the final frosting layerβ€”this step is key for a clean, professional finish with no crumbs peeking through.
πŸ’‘ Add 1/4 teaspoon of cocoa powder to the green frosting if you want a deeper, more vibrant shade that contrasts beautifully with the pink.
πŸ’‘ The unfrosted cake layers can be wrapped tightly in plastic wrap and frozen for up to 3 months; thaw in the refrigerator before frosting for a make-ahead shortcut.

  • Author: Ruby Bennett
  • Prep Time: 45 minutes
  • Chill Time: 25 minutes
  • Cook Time: 35 minutes
  • Category: Dessert
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Nutrition

  • Serving Size: 1 slice
  • Calories: 580
  • Sugar: 58g
  • Sodium: 280mg
  • Fat: 32g
  • Saturated Fat: 20g
  • Unsaturated Fat: 10g
  • Trans Fat: 0.5g
  • Carbohydrates: 72g
  • Fiber: 3g
  • Protein: 6g
  • Cholesterol: 120mg