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Best Buttermilk Birthday Cake | A Tender Three‑Layer Classic with Whipped Sprinkle Frosting

This moist and fluffy buttermilk birthday cake is made with three tender layers of vanilla buttermilk sponge and a creamy, sweet frosting packed with sprinkles. It’s perfect for celebrations and guaranteed to impress.

Ingredients

Scale
  • 3 cups (350g) cake flour
  • 2 cups (400g) superfine sugar
  • 1 tbsp + 1 tsp baking powder
  • 3/4 tsp salt
  • 1 cup (227g) cold unsalted butter, cut into pieces
  • 1 1/2 cups (360ml) buttermilk, room temperature
  • 2 tsp vanilla bean paste or pure vanilla extract
  • 1/4 tsp pure almond extract
  • 5 whole eggs, room temperature
  • 1 cup (230g) unsalted butter, room temperature
  • 1/2 cup (100g) vegetable shortening
  • 3 tbsp (45ml) clear corn syrup
  • 1 tbsp (15ml) pure vanilla extract
  • 1/8 tsp lemon extract
  • 2 1/2 cups (400g) confectioners’ sugar
  • 1/2 tsp fine salt
  • 1/2 cup (110g) cream cheese, softened
  • 1/2 cup (4 oz) sprinkles
  • Few drops turquoise gel color (optional)

Instructions

  1. Preheat oven to 350°F (180°C). Grease three 8-inch round cake pans and line with parchment.
  2. In a stand mixer bowl, whisk together flour, sugar, baking powder, and salt. Add cold butter piece by piece and mix on low until texture resembles cornmeal.
  3. In a measuring cup, combine 1 cup buttermilk, vanilla, and almond extract. In a separate cup, whisk eggs with remaining buttermilk.
  4. Increase mixer speed to medium-low and gradually add the vanilla mixture. Beat for 5 minutes and scrape down the bowl.
  5. Reduce speed to low and add egg mixture in three additions, mixing well after each. Fold batter once or twice to fully combine.
  6. Divide batter evenly among prepared pans. Bake two layers for 20–22 minutes. Repeat for the third layer. Cool in pans for 10 minutes, then transfer to wire racks to cool completely.
  7. To make the frosting, beat butter and shortening on medium-high speed for 3 minutes until fluffy. Add corn syrup, vanilla, and lemon extract and beat for another 3 minutes.
  8. Add sugar and salt, beat on low until combined, then increase speed and beat 3 more minutes. Add cream cheese and beat just until combined.
  9. To assemble, place first cake layer on plate and spread 1 1/4 cups of frosting on top. Add sprinkles. Repeat with remaining layers, placing the final layer bottom-side up. Smooth sides and chill for 15 minutes.
  10. Apply a crumb coat and chill for another 15 minutes. Tint 2 cups of frosting pastel turquoise and mix remaining sprinkles into white frosting. Frost cake and pipe border using a star tip.

Notes

  • Use room temperature ingredients for even mixing and texture.
  • Do not overbeat the frosting after adding cream cheese to avoid thinning it.
  • You can prepare cake layers in advance and wrap tightly in plastic for up to 3 days.
  • Turquoise gel color adds a decorative pastel finish—optional but beautiful.
  • Serve at room temperature for the best flavor and consistency.

Nutrition

Find it online: https://fiteatshub.com/best-buttermilk-birthday-cake-a-tender-three%e2%80%91layer-classic-with-whipped-sprinkle-frosting/