Bring a smile to someone’s face by celebrating their “half-birthday” with half of a birthday cake! One 9-inch vanilla funfetti cake, cut in half, stacked, and frosted to make a half-birthday cake.
One of the traditions that we started for our kids is celebrating their half-birthdays. At the halfway point between one birthday and the next, we celebrate with half a birthday cake and one present. It’s nothing big or fancy; it’s just our family slowing down and enjoying a small milestone.
Jake just had his half-birthday. He was thrilled to blow out 3 ½ candles and eat a slice of sprinkle-filled cake.
To make a half-birthday cake all you need to do is bake one 8 or 9-inch cake, cut it in half, stack the halves on top of each other, and frost them.
Since Jake loves sprinkles (what kid doesn’t?), I made a homemade funfetti cake. A moist vanilla cake, filled with colored sprinkles, topped with vanilla buttercream, and garnished with even more sprinkles.
Try the chocolate version, too: chocolate half-birthday cake.
BAKE SMARTER, NOT HARDER
Get tested recipes, baking tips, and exclusive content delivered right to your inbox.
Recipe
Half Birthday Cake (Homemade Funfetti Cake)
Ingredients
Cake:
- 1 ¼ cups all purpose flour
- ½ teaspoon baking powder
- ¼ teaspoon baking soda
- ¼ teaspoon salt
- 6 tablespoons unsalted butter, melted
- ¾ cup granulated sugar
- 1 egg
- 2 tablespoons plain yogurt or sour cream
- ⅔ cup milk
- 2 teaspoons pure vanilla extract
- ½ cup sprinkles, not nonpareils
Frosting:
- 10 tablespoons unsalted butter, softened
- 2 ½ cups powdered sugar, sifted
- 1 teaspoon pure vanilla extract
- 2-3 tablespoons heavy cream or half and half
- Additional sprinkles, for decorating the cake
Instructions
For the cake:
- Preheat oven to 350°F. Grease a 9-inch cake pan and set aside.
- In a medium sized bowl, combine flour, baking powder, baking soda, and salt. Set aside
- In a large bowl, whisk melted butter and sugar, until combined. Add egg, yogurt/sour cream, milk, and vanilla extract, whisk to combine. Slowly stir in the dry ingredients, mixing until they are just combined. Fold in the sprinkles, being careful not to over mix.
- Pour the batter in to the prepared pan – the batter will be thick. Bake for 24-28 minutes, until the cake springs back when you touch it and a toothpick inserted into the center comes out clean. Cool completely on a wire rack.
For the frosting:
- With a hand mixer or stand mixer, on medium speed, beat butter and powdered sugar for 2 minutes, until light and creamy. Add vanilla extract and 2 tablespoons of cream, and beat for another 2 minutes, scraping the sides of the bowl as necessary. If the frosting seems too thick, you can add another tablespoon of cream.
To assemble the cake:
- Cut the cake in half. Using a butter knife or offset spatula, frost the top of one half and then place the other half on top of it. Continue frosting the rest of the cake. Pipe additional frosting around the borders, if desired. Garnish with sprinkles.
Nutrition
Nutritional Information is an estimate based on third-party calculations and may vary based on products used and serving sizes.
Tried this recipe?Leave a comment and rating below!
Sonia says
I just made this today.. but I want to serve it saturday (2 days) . How should i store it until then? I swirled nutella into the batter instead of using sprinkles… if that makes any difference.
Celebrating Sweets says
It should be stored in the fridge. Enjoy!
Leslie Barry says
This looks amazing! Would it be the same amount of ingredients to make a dozen cupcakes?
Allison says
I haven’t tried it, but it should produce enough batter for close to 12 cupcakes.
rajani says
Thanks for sharing delicious cake recipe.