Happy Birthday Cake Slice

Featured in: Sweet Light Treats

This festive vanilla sponge features a moist texture enhanced by layers of creamy buttercream frosting. It’s topped with colorful sprinkles that add a joyful touch. The sponge is made with simple ingredients like flour, sugar, butter, eggs, milk, and vanilla extract, baked to a golden perfection. Smooth and fluffy buttercream frosting is carefully layered and spread, creating a delicious combination of softness and sweetness. Ideal for celebrations, this cake slice pairs beautifully with sparkling beverages or fresh lemonade.

Updated on Thu, 04 Dec 2025 12:42:00 GMT
A slice of Happy Birthday Cake is shown, fluffy and frosted, generously sprinkled with festive color. Save
A slice of Happy Birthday Cake is shown, fluffy and frosted, generously sprinkled with festive color. | freshyforks.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 was the highlight of our last birthday party and brought so much joy to everyone.

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:
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:
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.
This image reveals a delicious, layered Happy Birthday Cake, perfect for celebrating any special occasion with joy. Save
This image reveals a delicious, layered Happy Birthday Cake, perfect for celebrating any special occasion with joy. | freshyforks.com

This cake always brings our family together for a sweet celebration and warm memories.

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

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

Imagine a vibrant Happy Birthday Cake slice, showcasing fluffy vanilla layers and creamy buttercream frosting delighting the senses. Save
Imagine a vibrant Happy Birthday Cake slice, showcasing fluffy vanilla layers and creamy buttercream frosting delighting the senses. | freshyforks.com

This cake is a delicious way to celebrate any occasion with family and friends.

Recipe Questions & Answers

What makes the cake moist?

The combination of butter, eggs, and milk in the sponge helps retain moisture, resulting in a soft and tender crumb.

How do I ensure even layers when slicing?

Allow the cake to cool completely before slicing horizontally with a serrated knife for clean, even layers.

Can I add flavor variations?

Yes, try replacing some flour with cocoa powder for a chocolate twist or add fruit jam layers for extra flavor.

What is the best way to apply the buttercream?

Beat the buttercream until smooth and fluffy, then spread evenly between layers and around the cake for a creamy finish.

Are there any common allergens in this dessert?

This contains eggs, milk, wheat (gluten), and dairy. Check any decorative sprinkles for additional allergens.

Happy Birthday Cake Slice

Moist vanilla sponge layered with creamy buttercream and topped with colorful sprinkles.

Prep time
25 minutes
Time to cook
30 minutes
Time required
55 minutes
Recipe by Freshyforks Lena Brooks


Skill level Medium

Cuisine International

Portions 8 Number of servings

Diet Details Meatless

What You'll Need

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, room temperature
05 1/2 cup whole milk
06 2 tsp baking powder
07 1/2 tsp salt
08 1 tbsp pure vanilla extract

Buttercream Frosting

01 1 cup unsalted butter, softened
02 3 cups powdered sugar, sifted
03 2 tbsp whole milk
04 1 tsp 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, cream together butter and sugar until light and fluffy, about 3 minutes.

Step 03

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

Step 04

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

Step 05

Mix Batter: Add dry ingredients to wet mixture in three parts, alternating with milk, starting and ending with the flour. Mix until just combined.

Step 06

Bake Cake: Pour batter into prepared pan and smooth the top. Bake for 28-32 minutes or until a toothpick inserted into the center comes out clean.

Step 07

Cool Cake: Allow cake to cool in pan for 10 minutes, then transfer to wire rack to cool completely.

Step 08

Prepare Frosting: Beat butter until creamy. Gradually add powdered sugar, milk, vanilla extract, and salt, beating until smooth and fluffy.

Step 09

Assemble Cake: Once completely cooled, slice cake horizontally into two layers. Spread frosting between layers and cover top and sides evenly.

Step 10

Decorate and Serve: Sprinkle colorful decorations atop the frosting. Slice and serve.

Tools Needed

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

Allergy info

Review ingredients for allergens. Reach out to medical experts if you're not sure.
  • Contains eggs, milk, gluten (wheat), and dairy.
  • Check packaged decorations for possible allergens.

Nutritional breakdown (each serving)

This nutritional data guides only—don't treat as medical advice.
  • Energy (Calories): 430
  • Lipids: 21 grams
  • Carbohydrates: 57 grams
  • Proteins: 4 grams