This is a tall, towering confetti layer cake filled to the brim with rainbow sprinkles and finished off with sweet vanilla buttercream frosting. It’s classic and party-perfect in every way! The recipe has lived on my website since 2014 and has become a popular favorite, even scoring #1 (out of 9!) in a sprinkle cake bake-off. Below you’ll find my detailed recipe, video, and best success tips.
I originally published this recipe in 2014 and have since added new photos and a few more success tips. I’ve also made a few changes to the recipe, which you can read about in the post below and in the recipe notes following the printable recipe.
Just Like Box Funfetti Cake
This thick, plush confetti birthday cake is filled with the flavors of childhood party nostalgia: butter, vanilla, sugar, and rainbow sprinkles. Close your eyes and you can practically hear the sound of balloons being blown up and smell the extinguished birthday candles. But this cake shouldn’t be limited to birthday parties—or to childhood! This happy cake is a joy to serve and eat at any celebration. It’s like the boxed Funfetti cake, but better.
One reader, Christina, commented: “You have never steered me wrong, and this cake is no exception! I first found your website on my daughter’s first birthday (4 years ago), and I swore it was the best cake I’ve ever made! Since then, I have used recipes from your website for every family birthday cake I’ve made! This one is another hit and possibly my daughter’s (now her fifth birthday cake) new favorite! ★★★★★“
Why You’ll Love This Confetti Layer Cake
- From-scratch and loaded with happy colorful sprinkles
- Topped with sweet & creamy classic vanilla buttercream
- Soft crumb from cake flour
- Fluffy from extra egg whites
- Buttery & cakey from creamed butter & sugar
- Stick-to-your-fork moist (without tasting greasy!) from eggs, oil, & buttermilk
- Extra flavor from pure vanilla extract
This towering rainbow dessert has been on my site for a number of years, and during that time, I’ve made a couple small updates. This was a great confetti birthday cake recipe before; in fact, it was rated No. 1 (of 9) in the Pancake Princess’ best sprinkle cake bake-off, and came in a close 2nd in the Kitchn’s Funfetti cake bake-off. But with 3 small updates, the cake is now even greater.
From the Kitchn’s review: “This cake was seriously delicious. It had a nice light texture but was still super moist. The vanilla flavor was bold without being overpowering, and the cake was sweet without being cloying. I loved how easy the frosting was to make and appreciated how smoothly it went onto the cake. My only critique is that you have to whip the egg whites in a separate bowl, so it’s a bit tedious, but that’s the only negative I can think of.”
I have some egg-cellent news: that egg-stra step is gone. (Sorry, I couldn’t resist.)
What’s New in This Birthday Cake Recipe?
- Add the egg whites at the same time as the whole eggs: 4 whole eggs provide structure, moisture, and richness. 2 extra egg whites keep the cake lighter. Though whipping the whites separately does assist in preventing a dense cake, in recent testing, I discovered that removing this whipping step can be offset by 2 other changes to keep the batter light. (Both are next.)
- Decrease the butter and add oil: Previously, the recipe called for 1.5 cups of butter (3 sticks, about 345g), but using all creamed butter in a cake can certainly weigh down the crumb. I love using oil in cake recipes because it adds moisture and a delicate texture. And I love using butter in cake recipes because of its unparalleled flavor. Finding the right proportion of each? Now that’s the sweet spot, and I found it by reducing the butter by ¼ cup and adding in ⅓ cup oil in its place.
- Use cake flour: If you want a fluffy and soft bakery-style cake, use cake flour.
After years of testing cake recipes, I’m more confident than ever in this updated version. The cake closely resembles my vanilla cake, but uses a bit less sugar because we’re adding sweet sprinkles.
These Step Photos Will Help
Here is the butter, sugar, and oil mixture. You’ll cream butter and sugar together first, and then mix in the oil. Mixture will be creamy and mostly smooth:
Jimmies-type sprinkles are best for this Funfetti-style homemade cake. Expect a thick batter:
Divide the batter between 3 9-inch cake pans. You can squeeze the cake batter in 3 8-inch cake pans if needed, but be sure to extend the bake time as noted in the recipe. Always line your round pans with parchment paper rounds before adding the batter. Cool baked cakes for 20 minutes in the cake pans, and then remove the warm cakes and place on a wire rack to cool completely.
Sprinkle Success Tips
I’ve been baking sprinkles into cake & cupcake batters for years and have learned exactly which sprinkles work, and which don’t. Happy to share my best advice:
- My top sprinkle tip: Do not use nonpareils (the little balls) in cake batter. They will bleed their color as you fold them in, result in a less-than-appetizing-color cake.
- Rainbow sprinkles (aka “jimmies”) sold in the U.S. are intensely colored, but sprinkles sold in other countries may lose their color when baked. “Sugar strands” may be the same shape as jimmies, but they dissolve in the wet batter. For best results, try to use American-style rainbow sprinkles. The pictured cake uses Betty Crocker “Parlor Perfect” rainbow sprinkles. I also really like Canadian-brand Sweetapolita sprinkles.
- Confetti quins (the little discs) are also great to use in a sprinkle birthday cakes & cupcakes. They rarely bleed their color in batter.
- Naturally colored sprinkles are wonderful as decoration, but—depending on the brand—can lose their color in cake batter.
Buttercream Frosting
I use the same frosting as my 3-layer vanilla cake, but add a little more vanilla. It’s basically my vanilla buttercream recipe, only scaled up to yield enough for a tall layer cake. If you prefer chocolate frosting, use the chocolate fudge frosting from my piñata cake recipe. (It’s enough for this size cake.)
For a less sweet frosting option, use this recipe for Swiss meringue buttercream.
Can I tint this frosting? Yes! Feel free to add gel food coloring to the frosting to change its color.
Decorating Success Tip: Add a Crumb Coat
Because it’s so moist, the confetti cake can be a little crumbly when you’re decorating it. I recommend applying a thin crumb coat, which is a layer of frosting around the exterior of the cake to catch any crumbs. The frosting recipe below includes enough frosting for that thin crumb coat, then another thin layer of frosting on top of that. Note that I applied a slightly thicker crumb coat in the video tutorial below. Doesn’t matter either way; you’ll just have less or more frosting for that final frosting layer.
Use a flat icing spatula to spread on the frosting. Icing spatulas are handy if you decorate cakes and cupcakes often. Then you can run a bench scraper around the sides of the cake to smooth out the crumb coat as well as the top layer of frosting. You can watch me use both in the video tutorial below.
Chill the crumb-coated cake for 30 minutes, and then apply the final frosting layer.
Looking for a fun sprinkle cake that requires less effort than a 3-layer cake? Try these recipes:
- 1-Layer Sprinkle Cake
- 6-Inch Birthday Cake
- 12×17-inch Sprinkle Sheet Cake
- Super-soft Confetti Cupcakes
- Buttery Funfetti Cupcakes
- Prefer cheesecake? Try confetti sprinkle cheesecake
- How about a giant birthday cookie? Here’s my confetti sugar cookie cake.
- Or for breakfast try birthday cake pancakes or birthday cake cinnamon rolls
And here are the 10 best cake decorating tools.
Confetti Birthday Cake
- Prep Time: 45 minutes
- Cook Time: 25 minutes
- Total Time: 4 hours (includes chilling & cooling)
- Yield: serves 12-14
- Category: Cake
- Method: Baking
- Cuisine: American
Description
Buttery vanilla layer cake filled to the brim with rainbow sprinkles and finished off with sweet vanilla frosting. Pictured cake is 9 inches; for thicker cakes, use 8-inch pans. Review the recipe notes and bring all ingredients to room temperature before you begin.
Ingredients
Cake
- 3 and 3/4 cups (443g) cake flour (spooned & leveled)
- 1 teaspoon baking powder
- 1 teaspoon baking soda
- 1 teaspoon salt
- 1 and 1/4 cups (282g) unsalted butter, softened to room temperature
- 2 cups (400g) granulated sugar
- 1/3 cup (80ml) vegetable oil
- 4 large eggs, at room temperature*
- 2 large egg whites, at room temperature*
- 3 teaspoons (15ml) pure vanilla extract
- 1 and 1/2 cups (360ml) buttermilk, at room temperature*
- 3/4 cup (135g) rainbow sprinkles*
Vanilla Buttercream
- 1 and 1/2 cups (340g) unsalted butter, softened to room temperature
- 5 and 1/2 cups (650g) confectioners’ sugar
- 1/3 cup (80ml) heavy cream, at room temperature
- 3 teaspoons (15ml) pure vanilla extract (or use clear imitation vanilla extract for stark white frosting)
- 1/8 teaspoon salt
- optional: additional sprinkles for garnish
Instructions
- Preheat oven to 350°F (177°C). Grease three 8-inch or 9-inch cake pans, line with parchment paper rounds, then grease the parchment paper. Parchment paper helps the cakes seamlessly release from the pans. (If it’s helpful, see this parchment paper rounds for cakes video & post.)
- Make the cake: Whisk the cake flour, baking powder, baking soda, and salt together in a large bowl. Set aside.
- Using a handheld or stand mixer fitted with a paddle attachment, beat the butter and sugar together on high speed for 5 full minutes until completely creamed together and fluffy. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed. Add the oil and beat for 1 minute until combined. Add the eggs, egg whites, and vanilla extract and beat on medium-high speed until combined. Scrape down the sides and up the bottom of the bowl with a rubber spatula as needed.
- Add dry ingredients and buttermilk in three additions, mixing after each addition just until incorporated. Do not over-mix this batter. The batter will be velvety and thick. Gently fold in the sprinkles. Pour and spread the batter evenly into each cake pan.
- Bake for around 25–26 minutes or until the cakes are baked through. (8-inch cakes may take about 27–28 minutes.) Tent the cakes with foil after about 15 minutes to prevent the sides and top from over-browning. To test for doneness, insert a toothpick into the center of the cake. If it comes out clean, it’s done.
- Allow cakes to cool in the pans set on a wire rack for 20 minutes. Run a knife around the edges and then remove cakes from pans. Place cakes directly on wire racks to cool completely. The cakes must be completely cool before frosting and assembling.
- Make the frosting: In a large bowl using a handheld mixer or stand mixer fitted with a whisk or paddle attachment, beat the butter on medium speed until creamy, about 2 minutes. Add confectioners’ sugar, cream, vanilla extract, and salt. Beat on low speed for 30 seconds and then switch to high speed and beat for 2 minutes. Add more confectioners’ sugar if frosting seems too thin; more cream if frosting is too thick; or an extra pinch of salt if frosting is too sweet.
- Assemble cake + apply crumb coat: First, using a large serrated knife, slice a thin layer off the tops of the cakes to create a flat surface. Discard (or crumble over ice cream!). Place one cake layer on your cake stand, cake turntable, or serving plate. Using a flat icing spatula or small offset spatula, evenly cover the top with about 1 cup (about 250g) of frosting. Repeat with second cake layer, 1 more cup of frosting, and then the top cake layer. Spread a thin layer of frosting on the top and around the sides as a crumb coat. Run a bench scraper around the cake to smooth out crumb coat. Chill uncovered in the refrigerator for at least 30 minutes and up to 3 hours to set the crumb coat.
- Spread the remaining frosting all over the top and sides. Garnish with extra sprinkles, if desired.
- Serve cake immediately, or if you need to store it for a few hours, place it in a cake carrier at room temperature for up to 4 hours. For longer storage, refrigerate covered cake for up to 1 day. Cake is best served at room temperature, though, so if it’s been refrigerated, let it sit out at room temperature for 30 minutes before serving.
- Cover leftover cake tightly and store it in the refrigerator for 5 days. Again, I like using a cake carrier for storing and transporting.
Notes
- Make Ahead & Freezing Instructions: The cake layers can be baked, cooled, and covered tightly at room temperature overnight. Likewise, the frosting can be prepared and then covered and refrigerated overnight. When ready to decorate, let the frosting sit at room temperature to slightly soften for 15 minutes, then give it one more mix with the mixer on medium speed for about 1 minute before frosting cake. (Add a splash of cream to thin out frosting if needed.) See step 10 if you want to store the frosted/decorated cake before serving it. Frosted cake or unfrosted cake layers can be frozen for up to 2–3 months. Thaw overnight in the refrigerator and bring to room temperature before decorating/serving. See how to freeze cakes for detailed instructions.
- Special Tools (affiliate links): 8-inch Round Cake Pans or 9-inch Round Cake Pans | Glass Mixing Bowl | Whisk | Electric Mixer (Handheld or Stand) | Silicone Spatula | Cooling Rack | Cake Turntable | Flat Icing Spatula or Small Offset Spatula | Bench Scraper | Cake Carrier (for storage)
- 2022 Update: Recipe above was slightly updated in 2022. Old version used to call for 3 sticks (about 345g) of butter and no oil. The slight reduction of butter and added oil makes a moister cake, but feel free to use the old version. Also, the extra egg whites are now added when you add the whole eggs. You used to have to whip them separately until soft peaks form and then fold them in before adding the sprinkles. This step isn’t really necessary because we’re using a little oil and cake flour now. (See next Note.)
- Eggs: 4 whole eggs provide structure, moisture, and richness. 2 extra egg whites keep the cake light. I don’t recommend using 5 whole eggs as a replacement; stick to the 4 eggs + 2 egg whites combination.
- Buttermilk: If you don’t have buttermilk, you can make a DIY buttermilk substitute. Add 1 Tablespoon of white vinegar or lemon juice to a liquid measuring cup. Then add enough whole milk to the same measuring cup until it reaches 1 and 1/2 cups. (In a pinch, lower-fat or nondairy milks work for this soured milk, but the cake won’t taste as moist or rich.) Stir it around and let sit for 5 minutes. The homemade “buttermilk” will be somewhat curdled and ready to use in the recipe.
- Sprinkles: Avoid using sprinkles that will dye your batter. Steer clear of nonpareils, which are the little balls. The pictured cake uses Betty Crocker “Parlor Perfect” rainbow sprinkles, which I find in my regular grocery store. I also like to use these rainbow jimmies or confetti quins. Note that naturally colored sprinkles may lose their color in cake batter.
- Chocolate Frosting: Use the frosting from this piñata cake recipe. It makes enough for this size cake.
- Amount of Cake Batter & Other Size Cakes: This recipe yields nearly 8 cups of batter, which is helpful if you need it for different Cake Pan Sizes & Conversions. For a 1-layer cake, 12×17-inch sheet cake, or 6-inch layer cake, see the list of recipe links in the post, above the recipe card. For a 2-layer cake, divide batter between 2 9-inch cake pans instead of 3. (This is too much batter for 2 8-inch pans.) Increase bake time to about 30 minutes and use a toothpick to test for doneness. For a Bundt cake, use a 10–12-cup generously greased Bundt pan and bake for about 60 minutes, or until a toothpick inserted in the center comes out clean. There is too much batter for a 9×13-inch quarter sheet cake. I have 2 recipes on my website that would work for a 9×13-inch sprinkle cake. You could use this light and fluffy white cake recipe and fold 1/2 cup (about 90g) sprinkles into the batter before pouring into the pan. See those recipe Notes for a 9×13-inch cake. Or you can use this buttery sprinkle sheet cake recipe. See those recipe Notes for a 9×13-inch cake.
- Cupcakes: Use this batter for 3 dozen sprinkle cupcakes. Fill cupcake liners about 2/3 full to avoid over-flowing. Or use my confetti sprinkle cupcakes or funfetti cupcakes recipes.
Best confetti cake! I made this cake for my granddaughter’s 5th birthday! It was a hit. I made it again. A few days later for her kid party. This time I baked it as cupcakes. Either way it was delicious! Now it’s one of my favorite cake recipes! Thank you!
Hi can I add food colouring to the batter instead ?
Hi Olivia, We often add food coloring to the buttercream, but you could try to add it to the batter.
Thank you I was just worried it might split the buttermilk or something. Thanks. Looking for a rainbow type style recipe cake. Thanks
Hi! It’s me again :). I just made the cakes this morning and the baking didn’t really go as planned. At the 15 minute mark for the tinfoil tenting instructions, the top of the cake wasn’t cooked enough and ended up sticking to the tinfoil. At the 25 minute mark, the cakes weren’t all cooked through the same and I had to extend the cooking time from 2-7 minutes depending on the cake. The middle of the cakes also didn’t dome as expected.
My overall question is : was I supposed to bake each cake individually? Because I cooked all three at once in the middle rack.
Thanks for your help!
Hi Rachel, you can bake the layers all at once as long as they are all on the same rack (like you mention) and not touching one another. If you do bake them more than one at a time, it can help to rotate the pans throughout bake time. Most ovens have hot spots and rotating the pans will promote more even baking. Hope this helps!
I am using an 8inch by 3 inch heart shaped Springform pan for this recipe(requested by my granddaughter!), will this batter be too much to fill this pan?
P.S. I have LOVED all the recipes I have used from your site and the fact that you include so many tips about the recipes!! Thanks!!
Hi Sherry, there is too much batter for one pan. You can bake them in three separate layers, or for one layer, you can use this 1-layer sprinkle cake instead. Enjoy!
Thanks! I have another question, can I use buttermilk that I have had frozen for a short time in this cake??
Hi Sherry, absolutely. Thaw and bring to room temperature before using.
Hi! Love your recipes so much! If i only want it to be a 2 layer cake with only two 9” pans do i still cook for same amount of time and at same temperature? Or do i need to adjust it?
Hi Taylor, rather than modifying the recipe, you can make it as is, bake two layers, and use the leftover batter from the third layer to make about a dozen cupcakes. Or, we recommend making this white layer cake, which is soft, fluffy, and only 2 layers. You can add 1/2 cup of sprinkles to the cake batter.
Hi! Is it possible to make the cake and icing two days before icing/decorating it? I imagine it’s possible but I should refrigerate both the I ing and the cake – a then bring to room temperature before icing?
Hi Rachel, that will work! Make sure both are well covered while in the refrigerator. You may need to add a splash of liquid to the frosting and rewhip before using.
I had someone ask me to make a confetti cake, which I had never made before, and I decided to give this recipe a try. I cut the recipe in 1/2 to make a 3-layer 6” cake and it worked beautifully and it was delicious! This one is a keeper!
Does the brand of cake flour or butter make a difference?
Hi Shelli, you can use any brand available to you. For cake flour, we like using Swans Down or Softasilk.
Hi if I wanted to make a three tier cake with this confetti recipe, would two separate batches be enough or should I do three full batches? The layers would be 6 in, 8 in and 10 in.
Hi Nikki, here’s everything you need to know about cake pan sizes and conversions.
Hello!! Sorry if someone already asked but I’d love to make this cake, but chocolate confetti cake is being requested.. how much of what can I add to make it chocolate!? Thank you!!
Hi Karin, we’d recommend using our chocolate cake recipe instead and added sprinkles to that. Hope it’s a hit!
Hi there! I’m planning to make this cake for my daughter’s first birthday and was wondering if 400 grams of sugar might make it too sweet for our taste. Is it possible to reduce the sugar without compromising the cake’s moisture and texture?
Thanks so much!
Hi Daya, while you can certainly try reducing the sugar, keep in mind that it plays an important role in the overall taste, texture, and structure of the cake, so the outcome will be different. We’d start small, then adjust further for future batches. Or, you could go with a less-sweet frosting option like Swiss meringue buttercream or whipped frosting. Hope it’s a hit!
I only have one 9 inches cake pan.
Is there a problem baking it in 3 batches instead of 3 at the same time?
Hi Annie, not a problem at all. You can leave the remaining batter covered at room temperature while waiting for the current layer to bake. Enjoy!
This cake was amazing! I didn’t quite tent the cakes well enough and took off a little of the top, but it was fine since I had to flatten them anyways. It was a little too much frosting for me, so I just mixed it in with the cake I removed to level the rounds and made cake balls! This cake is coming with me to birthday parties all year!
I want to make confetti cake pops, I do use your vanilla and chocolate cake pop recipes, I love them, can I use this recipe to make confetti cake pops?
Hi Carole, that shouldn’t be a problem! Or, you can simply add some sprinkles to our vanilla cake pops instead.