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Funfetti Birthday Cake on a dessert plate, featuring layers of fluffy vanilla cake studded with rainbow jimmies and creamy American buttercream frosting, topped with extra colorful sprinkles and candles

Funfetti Birthday Cake

A vibrant Funfetti Birthday Cake packed with rainbow sprinkles and fluffy vanilla flavor. This easy funfetti cake recipe is perfect for kid-friendly parties or whimsical celebrations.
Prep Time 45 minutes
Cook Time 30 minutes
Cooling Time 1 hour
Total Time 2 hours 15 minutes
Course Birthday Cake, Dessert
Cuisine American
Servings 12 Slices
Calories 360 kcal

Ingredients
  

  • All-purpose flour: 2 ½ cups 300g
  • Baking powder: 2 tsp
  • Salt: ½ tsp
  • Unsalted butter: ¾ cup 170g, softened
  • Granulated sugar: 1 ¾ cups 350g
  • Large eggs: 3 room temperature
  • Pure vanilla extract: 1 tbsp
  • Whole milk: 1 cup 240ml, room temperature
  • Rainbow jimmies: ½ cup
  • For American Buttercream Frosting:
  • Unsalted butter: 1 cup 225g, softened
  • Powdered sugar: 4 cups 480g
  • Vanilla extract: 1 tsp
  • Milk: 2-3 tbsp
  • Rainbow jimmies: ¼ cup for decorating

Instructions
 

  • Preheat oven to 350°F (175°C); grease and line two 8-inch pans.
  • Whisk flour, baking powder, and salt.
  • Cream butter and sugar until fluffy.
  • Add eggs one at a time, then vanilla.
  • Alternate dry ingredients and milk, mixing until just combined.
  • Fold in rainbow jimmies gently.
  • Divide batter; bake 25-30 minutes until toothpick clean.
  • Cool 10 minutes in pans, then on rack.
  • For frosting: Beat butter, add powdered sugar, vanilla, milk; frost and sprinkle with jimmies.

Equipment

  • Two 8-inch round cake pans
  • Parchment paper
  • Mixing bowl
  • Electric mixer or whisk
  • Rubber spatula
  • Cooling rack
  • Cake leveler (optional)
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