Festive Funfetti Vanilla Cake

Homemade Funfetti cake slice with fluffy vanilla buttercream and rainbow sprinkles on white plate Save to Pinterest
Homemade Funfetti cake slice with fluffy vanilla buttercream and rainbow sprinkles on white plate | hearthlykitchen.com

This vibrant vanilla cake is speckled with rainbow sprinkles throughout the batter, creating a festive appearance that's perfect for birthdays and special occasions. The result is a moist, tender cake with colorful confetti-like dots in every slice.

The cake comes together easily with basic pantry ingredients and bakes into two 9-inch layers that you frost with a classic vanilla buttercream. The key is using jimmies-style sprinkles rather than nonpareils, which prevents color bleeding into the batter.

From start to finish, you'll need about an hour including cooling time. The frosting whips up light and fluffy, providing the perfect sweet finish to this cheerful dessert that's sure to bring smiles to any gathering.

The first time I made funfetti cake, I couldn't stop smiling at the rainbow-speckled batter. My daughter had requested something "extra happy" for her 8th birthday, and this colorful confection felt like pure joy in mixing bowl form. The whole kitchen smelled like butter and vanilla, and those little sprinkles made everything feel like a celebration before it even hit the oven.

Last summer, my neighbor's daughter graduated from elementary school, and her mom asked me to bring something festive. I showed up with this cake, and the kids literally gasped when they saw the slices. One little boy told me it tasted like a birthday party should taste, which might be the best review I've ever received.

Ingredients

  • 2 1/2 cups all-purpose flour: The foundation that holds everything together; I've learned measuring by weight gives the most consistent results.
  • 2 1/2 tsp baking powder: This is what makes each bite rise up light and tender.
  • 1/2 tsp salt: Just enough to balance all that sweetness and make the flavors pop.
  • 1 cup unsalted butter, softened: Room temperature butter creates that perfect velvety crumb.
  • 1 1/2 cups granulated sugar: Sweetens and tenderizes while creating that lovely golden crust.
  • 4 large eggs, room temperature: These provide structure and richness; let them come to room temp for better emulsification.
  • 1 tbsp pure vanilla extract: Don't skimp here; good vanilla makes all the difference in flavor.
  • 1 cup whole milk, room temperature: Adds moisture and helps create that tender cake texture.
  • 3/4 cup rainbow sprinkles (jimmies): The star of the show; stick to classic jimmies to avoid color bleeding.
  • 1 cup unsalted butter for frosting: Again, properly softened butter beats smooth and creamy.
  • 4 cups powdered sugar, sifted: Sifting prevents lumps and gives you silky smooth buttercream.
  • 2-3 tbsp milk or cream: Adjust this to get your perfect spreading consistency.
  • 2 tsp vanilla extract: More vanilla because you can never have enough.
  • Pinch of salt: Cuts through all that sugar for a balanced frosting.

Instructions

Get your oven ready:
Preheat to 350°F and prep your pans with butter, flour, and parchment circles so nothing sticks.
Mix the dry ingredients:
Whisk together flour, baking powder, and salt in a medium bowl until well combined.
Cream the butter and sugar:
Beat butter and sugar for about 3 minutes until it's pale and fluffy; this step creates air pockets for a lighter cake.
Add the eggs one at a time:
Beat well after each egg to ensure proper emulsification before stirring in vanilla.
Combine wet and dry:
Alternate adding flour mixture and milk, starting and ending with flour, mixing just until combined.
Fold in the sprinkles:
Gently fold with a spatula to distribute evenly without overworking the batter.
Bake to perfection:
Divide batter between pans, smooth the tops, and bake 25-30 minutes until a toothpick comes out clean.
Cool completely:
Let layers rest in pans 10 minutes before turning onto wire racks to cool fully.
Make the buttercream:
Beat butter until creamy, then gradually add powdered sugar, milk, vanilla, and salt until light and fluffy.
Assemble and decorate:
Frost between layers, cover the cake, and shower with extra sprinkles for that festive finish.
Festive Funfetti cake layered with creamy frosting and topped with colorful confetti sprinkles for birthdays Save to Pinterest
Festive Funfetti cake layered with creamy frosting and topped with colorful confetti sprinkles for birthdays | hearthlykitchen.com

My aunt made this for my cousin's wedding shower, and watching generations of women gather around that colorful cake, laughing and sharing stories, made me realize some recipes are about creating moments as much as feeding people.

Making It Ahead

The unfrosted cake layers freeze beautifully for up to a month. Just wrap them tightly in plastic wrap and foil, then thaw at room temperature before frosting.

Sprinkle Selection

I've learned the hard way that not all sprinkles are created equal. Look for jimmies, the elongated soft sprinkles, rather than the tiny crunch balls that dissolve into ugly streaks.

Frosting Like A Pro

A little trick I picked up: place a small dab of frosting under your cake plate to keep it from sliding around while you work. Your finished cake will stay perfectly put.

  • Chill your frosted cake for 15 minutes before adding the final coat of sprinkles.
  • Press sprinkles gently into the sides so they adhere properly.
  • Add sprinkles right before serving to keep them vibrant and fresh.
Slice of vanilla Funfetti cake showing moist rainbow-speckled crumb topped with swirled white buttercream frosting Save to Pinterest
Slice of vanilla Funfetti cake showing moist rainbow-speckled crumb topped with swirled white buttercream frosting | hearthlykitchen.com

This cake has become my go-to for every celebration because it turns ordinary moments into something worth celebrating. Hope it brings as many smiles to your table as it has to mine.

Recipe Questions & Answers

Use jimmies-style sprinkles rather than nonpareils or tiny ball sprinkles. Jimmies hold their shape during baking and won't bleed color into your batter. Nonpareils tend to dissolve and create streaks of color throughout the cake.

Yes, pour the batter into a 9x13-inch pan and bake for approximately 30-35 minutes. The baking time may vary slightly, so check for doneness with a toothpick in the center before removing from the oven.

Keep the frosted cake covered at room temperature for up to 2 days. For longer storage, refrigerate for up to 5 days. Bring to room temperature before serving for the best texture and flavor.

Absolutely. Wrap cooled cake layers tightly in plastic wrap and freeze for up to 3 months. Thaw overnight in the refrigerator before frosting. This is great for preparing ahead of time for special events.

Grease the pans thoroughly with butter or shortening, dust with flour, and line the bottoms with parchment paper circles. This triple protection ensures your cakes release perfectly every time without tearing.

Festive Funfetti Vanilla Cake

A colorful vanilla cake with rainbow sprinkles and creamy buttercream frosting, perfect for celebrations.

Prep 20m
Cook 30m
Total 50m
Servings 12
Difficulty Easy

Ingredients

Cake Components

  • 2 1/2 cups all-purpose flour
  • 2 1/2 teaspoons baking powder
  • 1/2 teaspoon salt
  • 1 cup unsalted butter, softened
  • 1 1/2 cups granulated sugar
  • 4 large eggs, room temperature
  • 1 tablespoon pure vanilla extract
  • 1 cup whole milk, room temperature
  • 3/4 cup rainbow sprinkles (jimmies)

Buttercream Frosting

  • 1 cup unsalted butter, softened
  • 4 cups powdered sugar, sifted
  • 2-3 tablespoons milk or cream
  • 2 teaspoons vanilla extract
  • Pinch of salt
  • Extra rainbow sprinkles for decoration

Instructions

1
Prepare the Oven and Pans: Preheat oven to 350°F. Grease and flour two 9-inch round cake pans, lining bottoms with parchment paper.
2
Combine Dry Ingredients: Whisk together flour, baking powder, and salt in a medium bowl until thoroughly blended.
3
Cream Butter and Sugar: Beat butter and sugar with electric mixer on medium-high speed for approximately 3 minutes until pale and fluffy.
4
Add Eggs and Vanilla: Add eggs individually, beating completely after each addition. Mix in vanilla extract.
5
Incorporate Flour and Milk: Alternate adding flour mixture and milk to butter mixture, starting and ending with dry ingredients. Mix until just combined.
6
Fold in Sprinkles: Gently fold rainbow sprinkles into batter using spatula. Avoid overmixing to prevent color bleeding.
7
Bake the Layers: Distribute batter evenly between prepared pans. Bake for 25-30 minutes until toothpick inserted in center emerges clean.
8
Cool Completely: Let layers rest in pans for 10 minutes, then invert onto wire racks. Cool entirely before frosting.
9
Prepare Buttercream: Beat butter until creamy. Gradually incorporate powdered sugar, milk, vanilla, and salt. Whip until light, fluffy, and spreadable.
10
Assemble and Decorate: Frost top of one cooled layer. Position second layer atop. Cover entire cake with remaining buttercream. Press additional sprinkles onto sides and top.
Additional Information

Equipment Needed

  • Electric stand or hand mixer
  • Medium and large mixing bowls
  • Rubber spatula
  • Measuring cups and spoons
  • Two 9-inch round cake pans
  • Wire cooling racks
  • Parchment paper

Nutrition (Per Serving)

Calories 480
Protein 4g
Carbs 65g
Fat 23g

Allergy Information

  • Contains wheat (gluten), milk, and eggs. Verify sprinkles and packaged ingredients for nut or soy facility warnings.
Grace Ellington

Home cook sharing easy recipes, kitchen tips, and meal ideas everyone can enjoy.