Let’s talk funfetti cake! Funfetti is always a good idea and a beloved cake that NO one will say, “no cake today.” 

I don’t typically teach how to make sheet cakes; instead, I show more layered cakes, but today I did want to share how you can make a sheet cake so you will become a more well-rounded baker and decorator. 

Sheet Cake is great for large gatherings, and they take less time since you don’t have to worry about the extra step of crumb coating and decorating tends to be a lot simpler. So it’s a win-win for newbies and when you are in a pinch a need a quick dessert. 

In this tutorial, I’ll show you how easy it is to make a sheet cake. I have listed tips for success and tools you will need before you begin to be super prepared to make this cake. 

My kitchen is my happy place, and I hope you find the same joy in yours. Cheers to all the cake you will make! 

Tips for Success: 

• Read through all the ingredients and instructions so you can get a better idea of how much time and what you need to make this cake.
• A single batch of this cake recipe makes three, 6-inch round cake layers. Double the cake recipe to make enough cake batter for three, 8-inch cake layers.
• In this cake recipe, you need 1 cup buttermilk; if you don’t have any buttermilk on hand, you can easily use 1 cup whole milk mixed with 1 Tablespoon lemon juice or white vinegar to make your own. 
• To make cake flour at home, mix 2 ¾ cups all-purpose flour and ¼ cup cornstarch. Sift or whisk together to get rid of any lumps. 
• Be careful not to overmix this cake batter, or else the cake will come out dense. Mix until all ingredients are well incorporated.
• You can bake the cake layers ahead of time. Wrap the cake layers in plastic wrap and freeze up to one month. 
• You can make the buttercream a day ahead and refrigerate them overnight. Then take them out to come back to room temperature. Make sure the buttercream is at room temperature before re-whipping.
• Serve at room temperature and enjoy! 

What Tools You’ll Need to Make This Cake: 

• 5-quart, Stand Mixer with mixing bowl & paddle attachment
• Offset spatula 
• Whisk or flour sifter
• Rubber Spatula
• Non-Stick Cooking Spray and Parchment Paper
• Mixing bowls
• 9 x 13-inch baking dish or pan

Here’s how to make this simple and delicious funfetti sheet cake! 

Let’s Get Baking!

Funfetti Sheet Cake 

1. Preheat the oven to 325 °F. Spray the baking pan with non-stick spray, line the bottom of each pan with parchment paper and spray again. Set aside.
2. In a medium-size bowl, whisk and stir together the flour, baking powder, and salt. Set aside. 
3. In the stand mixer bowl fitted with a paddle attachment, beat the butter, oil, and sugar on medium-high for 5 minutes.
4. Add the eggs, one at a time to the stand mixer bowl and beat on medium until well incorporated.
5. Turn the mixer on low and add the flour mixture to the butter mixture until fully incorporated. 
6. Pour in the buttermilk and vanilla extract. Mix on medium for another 30 seconds and scrape down the sides of the bowl. 
7. Fold the confetti sprinkles into the cake batter. 
8. Add cake batter to the prepared baking pan and bake for about 35-40 minutes or until a toothpick inserted into the center of each cake comes out clean or with just a few moist crumbs.
9. Remove cakes from the oven and let cool completely until room temperature. 

Vanilla Buttercream 

1. In the stand mixer bowl fitted with the paddle attachment, beat the butter until light and fluffy, about 2 minutes.
2. Turn the mixer to low and add the salt and vanilla. 
3. Next, gradually add powdered sugar, followed by the cream. Add your choice of gel food coloring. Mix on medium-high speed for about 5 minutes, until light and fluffy. Scrape down the sides of the bowl. 
4. Before using, turn the mixer on low and mix for 2 minutes to push out any air bubbles or use a rubber spatula to push out the air bubbles. (You may need to repeat this step when frosting the outside of the cake). 

Putting It All Together

1. Begin with a cooled sheet cake and add the whipped buttercream over the top. Use an offset spatula to spread out the buttercream and evenly cover the cake. 
2. Then add the confetti sprinkles. Serve at room temperature and enjoy. 

You May Also Enjoy: 

• How to Foolproof Funfetti Birthday Cake (recipe)
• 25 Favorite Baking Tools for Beginner Bakers (guide)
• How to Decorate Your First Cake (free course) 
• Cake Decorating Tool Kit (24-piece tool kit with free shipping)
• Cake Decorating Creator Program (ultimate bundle) 

This funfetti sheet cake is simple yet an excellent place to start for brand new bakers. This cake will feed a crowd and ignite your passion for decorating cakes! 

Are you struggling with cake decorating and need more one on one help? I’m now offering an online cake course called Cake Decorating for Beginners. This cake course will teach you everything you need to know to make beautiful cakes at home. You’ll get video and written tutorials so you can have the best experience!

It doesn’t matter if you are brand new to baking or have dabbled in decorating cake before; this Cake Decorating for Beginners Course will help you. My promise to you is if I could do this, then you can do this too! CLICK HERE TO ENROLL 

Please let me know if you have any questions, email me here at xokatierosario@gmail.com, and I’ll be happy to help! 

Happy Baking! 

Watch The How-to Video Below: 

Hey, if you liked this tutorial, you really should check out, Cake Decorating Creator Program, my online cake course. I coach you on everything I teach on these cake tutorials so that you can uplevel your baking and decorating skills. We 10x it so you get the results you want most. Like any new skill, it’s important to learn from the ground up to build a foundation, so take on any cake challenge. It is an investment your future self will thank you for. Check it out at XOKatieRosario.com/online-cake-course. I will see you there.

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