Happy Birthday Cake Slice

Featured in: Sweet & Simple Cravings

This festive vanilla sponge is baked to moist perfection and layered with a creamy buttercream frosting. The soft, fluffy cake is topped with colorful sprinkles, adding a joyful touch. Preparation involves creaming butter and sugar, blending in eggs and vanilla, then alternating dry ingredients with milk for a tender structure. After baking, the cake cools before slicing horizontally to add the smooth buttercream between layers and around the cake. Ideal for celebrations and customizable with chocolate or fruit jam additions.

Updated on Thu, 04 Dec 2025 12:59:00 GMT
A slice of fluffy Happy Birthday Cake, frosted with creamy buttercream and cheerful sprinkles. Save
A slice of fluffy Happy Birthday Cake, frosted with creamy buttercream and cheerful sprinkles. | frizplo.com

A festive, moist vanilla sponge cake layered with creamy buttercream and topped with colorful sprinkles— a joyful treat perfect for any celebration.

This cake is a family favorite for birthdays and special occasions, bringing joy and smiles every time I bake it.

Ingredients

  • For the Sponge Cake: 1 2/3 cups (210 g) all-purpose flour, 1 cup (200 g) granulated sugar, 1/2 cup (115 g) unsalted butter, softened, 3 large eggs, at room temperature, 1/2 cup (120 ml) whole milk, 2 tsp baking powder, 1/2 tsp salt, 1 tbsp pure vanilla extract
  • For the Buttercream Frosting: 1 cup (225 g) unsalted butter, softened, 3 cups (360 g) powdered sugar, sifted, 2 tbsp whole milk, 1 tsp pure vanilla extract, Pinch of salt
  • For Decoration: 1/4 cup (40 g) colorful sprinkles

Instructions

Preheat Oven:
Preheat the oven to 350°F (175°C). Grease and line an 8-inch (20 cm) round cake pan with parchment paper.
Cream Butter and Sugar:
In a large bowl, cream together the butter and sugar until light and fluffy, about 3 minutes.
Add Eggs and Vanilla:
Beat in the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract.
Mix Dry Ingredients:
In a separate bowl, whisk together the flour, baking powder, and salt.
Combine Mixtures:
Add the dry ingredients to the wet mixture in three parts, alternating with the milk, beginning and ending with the flour. Mix until just combined.
Prepare Batter:
Pour the batter into the prepared cake pan and smooth the top.
Bake:
Bake for 28-32 minutes, or until a toothpick inserted in the center comes out clean.
Cool Cake:
Let the cake cool in the pan for 10 minutes, then turn out onto a wire rack to cool completely.
Make Frosting:
For the frosting, beat the butter until creamy. Gradually add powdered sugar, milk, vanilla, and salt, beating until smooth and fluffy.
Assemble Cake:
Once the cake is completely cool, slice it horizontally to create two layers. Spread frosting between the layers and over the top and sides.
Decorate:
Decorate with colorful sprinkles. Slice and serve.
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Baking this cake has become a treasured family tradition, creating sweet memories each time we celebrate.

Required Tools

8-inch (20 cm) round cake pan, Electric mixer, Mixing bowls, Rubber spatula, Wire rack, Serrated knife

Allergen Information

Contains eggs, milk, wheat (gluten), and dairy. Check all packaged decorations for potential allergens.

Nutritional Information

Per serving: Calories 430, Total Fat 21 g, Carbohydrates 57 g, Protein 4 g

This sweet Happy Birthday Cake offers a rich taste, perfect for celebrating birthdays, beautifully layered. Save
This sweet Happy Birthday Cake offers a rich taste, perfect for celebrating birthdays, beautifully layered. | frizplo.com

This happy birthday cake is sure to brighten any celebration and impress your guests with its classic flavor and festive look.

Recipe FAQ

How do I achieve a moist texture in the sponge?

Ensure to cream butter and sugar thoroughly, use room temperature eggs, and alternate dry ingredients with milk carefully for a tender crumb.

Can I substitute any ingredients for dietary needs?

Buttercan be replaced with dairy-free alternatives, and eggs can be swapped with flax or chia seeds for vegan options, though texture may vary.

What is the best way to layer the cake evenly?

Allow the cake to cool completely, then use a serrated knife to slice horizontally. Spread buttercream evenly between layers for balanced flavor.

How should the decorated cake be stored?

Keep the cake covered in the refrigerator and bring to room temperature before serving to preserve freshness and texture.

Can decorations be customized?

Yes, colorful sprinkles can be replaced with nuts, fruit, or edible flowers to suit different occasions and preferences.

Happy Birthday Cake Slice

Moist vanilla sponge layered with rich buttercream and colorful sprinkles for joyful occasions.

Prep duration
25 min
Time to cook
30 min
Complete duration
55 min
Created by Madison Young

Classification Sweet & Simple Cravings

Complexity Level Medium

Cultural Origin International

Output 8 Portion Count

Dietary requirements Meat-Free

Components

Sponge Cake

01 1 2/3 cups all-purpose flour
02 1 cup granulated sugar
03 1/2 cup unsalted butter, softened
04 3 large eggs, at room temperature
05 1/2 cup whole milk
06 2 teaspoons baking powder
07 1/2 teaspoon salt
08 1 tablespoon pure vanilla extract

Buttercream Frosting

01 1 cup unsalted butter, softened
02 3 cups powdered sugar, sifted
03 2 tablespoons whole milk
04 1 teaspoon pure vanilla extract
05 Pinch of salt

Decoration

01 1/4 cup colorful sprinkles

Directions

Step 01

Prepare Oven and Pan: Preheat oven to 350°F. Grease and line an 8-inch round cake pan with parchment paper.

Step 02

Cream Butter and Sugar: In a large bowl, beat the softened butter and granulated sugar until light and fluffy, approximately 3 minutes.

Step 03

Incorporate Eggs and Vanilla: Add eggs one at a time, mixing well after each addition, then blend in vanilla extract.

Step 04

Combine Dry Ingredients: In a separate bowl, whisk the flour, baking powder, and salt.

Step 05

Mix Wet and Dry Components: Alternate adding dry ingredients and milk to the creamed mixture in three parts, beginning and ending with flour, stirring until just incorporated.

Step 06

Bake the Sponge: Pour batter into the prepared pan, smooth the top, and bake for 28 to 32 minutes until a toothpick inserted in the center comes out clean.

Step 07

Cool the Cake: Allow the cake to cool in the pan for 10 minutes before transferring to a wire rack to cool completely.

Step 08

Prepare Frosting: Beat softened butter until creamy, then gradually add powdered sugar, milk, vanilla, and salt; continue beating until smooth and fluffy.

Step 09

Assemble Layers: Slice the cooled cake horizontally into two layers. Spread frosting between layers and cover the top and sides evenly.

Step 10

Decorate and Serve: Sprinkle colorful decorations over the frosted cake, slice into portions, and serve.

Necessary tools

  • 8-inch round cake pan
  • Electric mixer
  • Mixing bowls
  • Rubber spatula
  • Wire rack
  • Serrated knife

Allergy details

Review each component for potential allergens and seek professional healthcare advice if you're uncertain.
  • Contains eggs, milk, wheat (gluten), and dairy.
  • Verify decorations for potential allergens.

Nutritional breakdown (per portion)

These values are provided as estimates only and shouldn't replace professional medical guidance.
  • Energy Content: 430
  • Fats: 21 g
  • Carbohydrates: 57 g
  • Proteins: 4 g