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The Ultimate Homemade Funfetti Birthday Cake

A soft and fluffy vanilla layer cake filled with colorful rainbow sprinkles and frosted with creamy vanilla buttercream.
Print Recipe Pin Recipe
Prep Time 20 minutes
Cook Time 28 minutes
Total Time 48 minutes
Servings: 12 slices
Course: Dessert
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

Cake Batter
  • 2.5 cups all-purpose flour
  • 2.5 tsp baking powder
  • 0.5 tsp salt
  • 0.75 cup unsalted butter softened
  • 1.75 cups granulated sugar
  • 4 eggs large
  • 1 tbsp vanilla extract
  • 1 cup whole milk
  • 0.75 cup rainbow sprinkles
Vanilla Buttercream
  • 1 cup unsalted butter softened
  • 3.5 cups powdered sugar
  • 2 tsp vanilla extract
  • 3 tbsp milk or cream
  • 0.25 tsp salt

Equipment

  • Mixing bowls
  • Cake pans
  • Wire rack
  • Hand mixer or stand mixer

Method
 

  1. Preheat oven to 350°F (175°C) and prepare two 8-inch cake pans.
  2. Whisk flour, baking powder, and salt together.
  3. Beat butter and sugar until light and fluffy.
  4. Add eggs one at a time then mix in vanilla.
  5. Alternate adding dry ingredients and milk until batter forms.
  6. Fold in rainbow sprinkles gently.
  7. Divide batter into pans and bake 25–30 minutes.
  8. Cool completely before frosting.
  9. Beat butter, powdered sugar, vanilla, salt, and milk to make frosting.
  10. Frost cake layers and decorate with sprinkles.

Notes

Use jimmies sprinkles for best color results when baking.