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Delicious Funfetti Cake Recipe with Easy Brown Butter Vanilla Buttercream

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A colorful funfetti vanilla cake paired with a rich, nutty brown butter vanilla buttercream that is perfect for celebrations or everyday indulgence.

Ingredients

Scale
  • 2 ½ cups (315g) all-purpose flour
  • 2 ½ teaspoons (10g) baking powder
  • ½ teaspoon (2g) baking soda
  • ½ teaspoon (3g) salt
  • 1 ¾ cups (350g) granulated sugar
  • 1 cup (227g) unsalted butter, softened
  • 4 large eggs, room temperature
  • 2 teaspoons (10ml) vanilla extract
  • 1 cup (240ml) buttermilk, room temperature (or milk + 1 tbsp lemon juice)
  • ½ cup (90g) rainbow sprinkles (sturdy jimmies recommended)
  • 1 cup (227g) unsalted butter, browned
  • 4 cups (480g) powdered sugar, sifted
  • 2 teaspoons (10ml) pure vanilla extract
  • 2–4 tablespoons (30-60ml) heavy cream
  • Pinch of salt (optional)

Instructions

  1. Preheat oven to 350°F (175°C). Grease and flour two 8-inch pans or line with parchment paper.
  2. In a large bowl, whisk together flour, baking powder, baking soda, and salt.
  3. In a separate bowl, beat softened butter and granulated sugar with an electric mixer until light and fluffy, about 3-4 minutes.
  4. Add eggs one at a time, beating well after each addition, then stir in vanilla extract.
  5. Add dry ingredients in three parts, alternating with buttermilk, starting and ending with dry ingredients. Mix gently after each addition.
  6. Fold in rainbow sprinkles carefully to avoid color bleeding.
  7. Divide batter evenly between prepared pans and smooth tops. Bake 30-35 minutes or until a toothpick inserted in the center comes out clean.
  8. Cool cakes in pans for 10 minutes, then turn out onto cooling racks to cool completely.
  9. While cakes bake, brown 1 cup unsalted butter in a light-colored saucepan over medium heat until golden and fragrant, about 5-7 minutes. Remove from heat and cool slightly.
  10. Beat browned butter until smooth. Gradually add powdered sugar, mixing on low speed. Add vanilla extract, heavy cream, and salt if using. Beat until fluffy, about 3 minutes.
  11. Place one cake layer on serving plate. Spread a thick layer of buttercream on top. Add second layer and frost top and sides evenly. Smooth with offset spatula and decorate with extra sprinkles if desired.

Notes

Use sturdy jimmies sprinkles to avoid color bleeding. Brown butter in a light-colored pan and remove immediately when nutty aroma appears to prevent burning. If buttercream is too soft, chill briefly and whip again. Sift powdered sugar to avoid grainy frosting. Adjust vanilla and cream to taste.

Nutrition

Keywords: funfetti cake, brown butter buttercream, vanilla cake, celebration cake, easy cake recipe, sprinkles cake, party cake

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