Funfetti Layer Cake Recipe

If you’re looking for a colorful, celebratory cake that’s sure to bring joy to any occasion, look no further than this Funfetti Layer Cake! Packed with rainbow sprinkles and topped with a luscious buttercream frosting, this cake is perfect for birthdays, parties, or any day that needs a little extra fun. The cake’s soft and fluffy layers are filled with vanilla flavor and bursts of colorful sprinkles, while the buttercream is rich, creamy, and perfectly sweet. Let’s dive into this easy and fun recipe that’s guaranteed to become a favorite for all ages!

What is Funfetti Cake?

Funfetti Cake is a light, fluffy vanilla cake studded with colorful sprinkles (also known as "confetti") throughout the batter. When baked, the sprinkles melt into the cake, creating vibrant bursts of color in every bite. It’s often topped with a sweet vanilla buttercream frosting and extra sprinkles on top for added fun. The name "funfetti" comes from the combination of “fun” and “confetti,” and it’s the perfect cake for celebrations like birthdays, graduations, or any festive event.

Ingredients List for Funfetti Layer Cake

For the Cake:

• 2 ½ cups cake flour (or all-purpose flour + cornstarch substitution)
• 1 tablespoon baking powder
• ½ teaspoon baking soda
• ½ teaspoon salt
• 1 cup (2 sticks) unsalted butter, softened
• 1 ½ cups granulated sugar
• 4 large egg whites, room temperature
• 1 tablespoon pure vanilla extract
• 1 cup whole milk, room temperature
• ½ cup sour cream, room temperature
• ¾ cup rainbow sprinkles (use "jimmies" sprinkles, not nonpareils, which can bleed into the batter)

For the Vanilla Buttercream Frosting:

• 1 ½ cups (3 sticks) unsalted butter, softened
• 5 cups powdered sugar, sifted
• 2 teaspoons vanilla extract
• 3-4 tablespoons heavy cream or whole milk (for desired consistency)
• Pinch of salt
• Extra sprinkles for decorating

Substitutions and Variations

This recipe is quite versatile, and you can easily customize it to suit your preferences or dietary needs. Here are some ideas:

Ingredient Substitutions:

• Cake Flour Substitute: If you don’t have cake flour, substitute with all-purpose flour. For every cup of all-purpose flour, remove 2 tablespoons and replace with cornstarch. Sift well to combine.
• Sour Cream Substitute: Greek yogurt can be used in place of sour cream for similar moisture and tanginess. You can also use buttermilk for a lighter texture.
• Dairy-Free Option: Swap the butter and milk with plant-based alternatives (like vegan butter and almond milk) and use a dairy-free frosting for a vegan version of this cake.

Flavor Variations:

• Lemon Funfetti Cake: Add 1 tablespoon of lemon zest and a tablespoon of lemon juice to the batter for a citrusy twist. You can also add a little lemon zest to the frosting for a refreshing flavor.
• Almond Funfetti Cake: Replace half of the vanilla extract with almond extract for a nutty, fragrant twist.
• Chocolate Funfetti Cake: Add ⅓ cup of cocoa powder to the dry ingredients for a chocolatey version of this classic funfetti cake.

Step-by-Step Instructions for Funfetti Layer Cake

Now, let’s get into how to make this colorful Funfetti Layer Cake from scratch!

1. Preheat and Prepare Cake Pans

Preheat your oven to 350°F (175°C). Grease and flour three 8-inch or 9-inch round cake pans. Line the bottoms of the pans with parchment paper to ensure easy release.

2. Mix the Dry Ingredients

In a medium bowl, sift together the cake flour, baking powder, baking soda, and salt. Set this mixture aside.

3. Cream the Butter and Sugar

In a large mixing bowl, using a hand mixer or stand mixer fitted with the paddle attachment, beat the butter and sugar together on medium-high speed until light and fluffy, about 3-4 minutes. Scrape down the sides of the bowl as needed.

4. Add Egg Whites and Vanilla

Reduce the mixer speed to medium and add the egg whites, one at a time, beating well after each addition. Stir in the vanilla extract and mix until fully combined.

5. Incorporate Dry Ingredients and Milk

With the mixer on low speed, add the dry ingredients in three additions, alternating with the milk and sour cream. Start and end with the dry ingredients, mixing just until combined after each addition. Be careful not to overmix the batter, as this can cause the cake to become dense.

6. Fold in the Sprinkles

Using a rubber spatula, gently fold in the rainbow sprinkles, being careful not to over-stir, as the colors may start to bleed into the batter.

7. Divide the Batter

Evenly divide the batter between the three prepared cake pans. Use a spatula to smooth the tops and ensure an even distribution.

8. Bake the Cakes

Bake the cakes for 25-30 minutes, or until a toothpick inserted into the center comes out clean or with a few moist crumbs. If using 9-inch pans, the cakes may bake faster, so keep an eye on them after 20 minutes.

9. Cool the Cakes

Allow the cakes to cool in the pans for about 10 minutes, then turn them out onto a wire rack to cool completely before frosting.

How to Make the Vanilla Buttercream Frosting

While your cakes are cooling, let’s make the creamy Vanilla Buttercream Frosting.

1. Beat the Butter

In a large mixing bowl, beat the softened butter on medium-high speed using a hand or stand mixer until creamy and light, about 3-4 minutes.

2. Add Powdered Sugar

Gradually add the powdered sugar, one cup at a time, mixing on low speed to incorporate. Once all the sugar is added, increase the speed to medium-high and beat for another 2 minutes.

3. Add Vanilla and Cream

Add the vanilla extract and heavy cream, one tablespoon at a time, until the frosting reaches your desired consistency—smooth and spreadable, but still firm enough to hold its shape. Add a pinch of salt to balance the sweetness.

4. Whip the Frosting

Beat the frosting on high speed for an additional 2-3 minutes until light, fluffy, and creamy.

How to Assemble the Funfetti Layer Cake

1. Level the Cake Layers

If your cakes have domed while baking, use a serrated knife to carefully trim off the tops, making them level. This will help your layers stack neatly.

2. Frost the First Layer

Place one cake layer on a serving plate or cake stand. Spread about 1 cup of the vanilla buttercream frosting over the top, smoothing it out with a spatula.

3. Add the Second Layer

Place the second cake layer on top of the first, pressing down gently to adhere. Frost the top of the second layer with another cup of frosting.

4. Add the Final Layer

Place the third cake layer on top, then frost the top and sides of the cake with the remaining buttercream. Use an offset spatula to smooth the frosting for a clean finish or create fun swirls for a rustic look.

5. Decorate with Sprinkles

Once the cake is fully frosted, sprinkle extra rainbow sprinkles over the top and sides for decoration. You can also pipe extra frosting around the edges for a more polished look.

Common Mistakes to Avoid

• Overmixing the Batter: Be careful not to overmix the batter after adding the dry ingredients. Overmixing can cause the cake to become dense or tough. Mix just until everything is combined.
• Using Nonpareils: Nonpareil sprinkles (the tiny, round ones) tend to bleed into the batter and turn it grayish. Stick to "jimmies" (the longer, rod-shaped sprinkles) for the best results.
• Not Letting the Cake Cool Fully: If the cake is even slightly warm when you frost it, the frosting will melt and slide off. Make sure the cake is completely cool before assembling and frosting.

Serving and Presentation Tips

How to Serve Funfetti Layer Cake

• Room Temperature: For the best flavor and texture, allow the cake to sit at room temperature for 30 minutes before serving. This will allow the frosting to soften and the cake layers to come to life.
• With Ice Cream: Serve each slice with a scoop of vanilla or birthday cake-flavored ice cream for an extra indulgent treat.

Presentation Ideas for Funfetti Layer Cake

• Sprinkle Explosion: After frosting, coat the entire cake with sprinkles for a fun, confetti-like effect. You can gently press sprinkles onto the sides of the cake for a full coverage look.
• Cake Toppers: Add colorful candles, sparklers, or even small toy toppers (like unicorns or rainbows) to give the cake a festive vibe for a birthday or special event.
• Swirl Pattern: Use different food coloring to dye small portions of the frosting and create a swirl pattern on top for a vibrant, eye-catching cake.

Funfetti Layer Cake Recipe Tips

• Room Temperature Ingredients: Ensure that your butter, eggs, and milk are at room temperature before starting. This helps the ingredients blend together more smoothly and results in a lighter cake texture.
• Sift Your Powdered Sugar: To avoid lumps in your buttercream, always sift your powdered sugar before adding it to the frosting.
• Freeze the Cake Layers: If you have time, freeze the cake layers for about 30 minutes before frosting. This helps prevent crumbs from getting into the frosting and makes the cake easier to handle.

Frequently Asked Questions (FAQs)

Can I make the cake layers ahead of time?

Yes! You can make the cake layers up to 2 days in advance. Once the layers are completely cool, wrap them tightly in plastic wrap and store at room temperature. Frost the cake on the day you plan to serve it.

Can I freeze this cake?

Absolutely. You can freeze the unfrosted cake layers for up to 3 months. Wrap each layer tightly in plastic wrap, then in aluminum foil, and freeze. Thaw the layers at room temperature before frosting and assembling.

Can I make this cake gluten-free?

Yes, simply replace the cake flour with a gluten-free all-purpose flour blend. Be sure to use a blend that includes xanthan gum for structure.

How long will this cake stay fresh?

The cake will stay fresh for 3-4 days if stored in an airtight container at room temperature. If refrigerating, bring the cake to room temperature before serving for the best texture.

What if I don’t have cake flour?

You can substitute cake flour by using all-purpose flour with cornstarch. For every cup of all-purpose flour, remove 2 tablespoons and replace with cornstarch, then sift together.

Conclusion

This Funfetti Layer Cake is a celebration in itself, with its colorful sprinkles, light vanilla flavor, and rich buttercream frosting. Whether you’re making it for a birthday party, a festive occasion, or just because, it’s sure to bring smiles and fun to the table. With endless options for customization, this cake can be tailored to fit any theme or taste preference. Give this recipe a try, and prepare to enjoy every sweet, sprinkle-filled bite!

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