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Best Funfetti Birthday Cake Recipe with Easy Vanilla Buttercream Frosting

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A moist and tender funfetti birthday cake with a light vanilla buttercream frosting, perfect for celebrations and easy to make with simple ingredients.

Ingredients

Scale
  • 2 ½ cups (315g) all-purpose flour
  • 2 ½ tsp baking powder
  • ½ tsp baking soda
  • ½ tsp salt
  • 1 cup (227g) unsalted butter, softened
  • 1 ¾ cups (350g) granulated sugar
  • 4 large eggs, room temperature
  • 2 tsp pure vanilla extract
  • 1 cup (240ml) buttermilk
  • ¾ cup (120g) rainbow sprinkles (jimmies or non-melting)
  • For the Vanilla Buttercream Frosting:
  • 1 cup (227g) unsalted butter, softened
  • 4 cups (480g) powdered sugar, sifted
  • 1 ½ tsp pure vanilla extract
  • 2–4 tbsp (30-60ml) heavy cream or whole milk
  • Pinch of salt

Instructions

  1. Preheat oven to 350°F (175°C). Grease two 8-inch cake pans and line bottoms with parchment paper.
  2. Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
  3. Using an electric mixer, beat softened butter and granulated sugar on medium speed until light and fluffy, about 3-5 minutes.
  4. Add eggs one at a time, mixing well after each addition. Mix in vanilla extract.
  5. Reduce mixer speed to low. Alternately add dry ingredients and buttermilk in thirds and halves, mixing until just combined. Do not overmix.
  6. Fold in sprinkles gently with a rubber spatula. Optionally chill batter for 10 minutes before folding in sprinkles to prevent bleeding.
  7. Divide batter evenly between prepared pans and smooth tops.
  8. Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean or with a few moist crumbs.
  9. Cool cakes in pans for 10 minutes, then transfer to cooling racks to cool completely.
  10. For frosting, beat softened butter until creamy, about 2 minutes. Gradually add powdered sugar on low speed until combined.
  11. Add vanilla extract, heavy cream or milk, and pinch of salt. Beat on high for 3 minutes until light and fluffy. Adjust consistency as needed.
  12. Place one cake layer on a serving plate and spread a thick layer of frosting on top.
  13. Place second layer on top and cover entire cake with remaining frosting. Smooth with an offset spatula or create a rustic finish.
  14. Decorate top and sides with extra rainbow sprinkles.

Notes

Use room temperature eggs and butter for best results. Fold sprinkles in gently to avoid color bleeding. Chill frosting if too soft before applying. Let assembled cake rest in fridge for an hour to meld flavors and improve slicing. Use jimmies or non-melting sprinkles to prevent color bleeding. For dairy-free or gluten-free adaptations, see recipe notes.

Nutrition

Keywords: funfetti cake, birthday cake, vanilla buttercream, easy cake recipe, party cake, sprinkles cake, homemade cake

Find it online: https://bitefuljoy.com/best-funfetti-birthday-cake-recipe-with-easy-vanilla-buttercream-frosting/