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A from scratch Homemade Funfetti Cake from scratch is the perfect cake for any birthday or occasion! Fluffy white cake mix is full of sprinkles, topped with a heavenly sprinkle buttercream frosting!

I’d eat this cake with or without the birthday party – it’s one of the best cakes ever!

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One piece of homemade funfetti cake on a plate with corner bite missing
Table of Contents
  1. Why you’ll love my Homemade Funfetti Cake Recipe
  2. Making Funfetti Sheet Cake Recipe Video
  3. Funfetti Cake Ingredients
  4. Which sprinkles are best for funfetti cake?
  5. How to make Homemade Funfetti Cake
  6. Best Homemade Frosting for DIY Funfetti Cake
  7. How to Decorate Confetti Cake
  8. Expert Tips for Funfetti Cake
  9. What can you substitute for buttermilk?
  10. How to decorate confetti cake?
  11. Can I make this into a layer cake?
  12. Best Funfetti Cake FAQ
  13. Other Favorite Recipes
  14. Homemade Funfetti Cake Recipe

Why you’ll love my Homemade Funfetti Cake Recipe

My favorite cake in the world is a sprinkle cake, also known as a Funfetti Cake. You’ve probably seen Funfetti Cake Mix in a box, or you may have heard it called Confetti Cake as well (I think that depends on the brand.) To me, a funfetti cake is basically a yellow cake with lots of sprinkles, and it’s served with a vanilla frosting, also full of fun colorful sprinkles.

I have a Funfetti Cupcake Recipe I love but I thought it was time to turn them into a sheet cake. Sometimes I don’t want to make a layer cake or a small square or one-layer round cake. I want an old fashioned 9×13-inch cake like my mom used to make, and this cake recipe fits that bill.

This is a soft and fluffy cake recipe that has a moist crumb. It’s easy to make and takes zero cake decorating skill. That’s what I love about a sheet cake, although you can make this as a layer cake too, or even cupcakes. Or maybe even turn it into a brownie cake like I did for my last birthday. I know that this cake and my classic birthday cake are my two favorites!

Making Funfetti Sheet Cake Recipe Video

ingredients in funfetti cake

Funfetti Cake Ingredients

All-Purpose Flour: Be sure to measure it correctly. Some recipes use cake flour, but I prefer all purpose flour.

Baking Powder: Makes the cake nice and fluffy.

Salt: For flavor – desserts need salt!

Butter: I use unsalted butter and I start with it melted. I find that melted butter creates a moister cake.

Eggs: Always buy large eggs. I also use whole eggs instead of just egg whites. This creates a more yellow than white cake. Also, it’s easier!

Vanilla: Buy PURE vanilla extract. You can also add a bit of almond extract if you like!

Buttermilk: The acid in the buttermilk helps keep the cake nice and soft. Make your own buttermilk if you don’t have any.

Sprinkles: The most important part! These are in the cake and the frosting. (See next section)

Homemade funfetti cake in cake pan with one square piece missing

Which sprinkles are best for funfetti cake?

  • Jimmies: These are the ones I prefer to bake with. They are the long, rod-like rainbow sprinkles that come in lots of colors.
  • Nonpareils: The little tiny balls. I don’t like these in general (they go EVERYWHERE) but they are more likely to melt into your batter.
  • Sequins: Also called Quinns, these are good for in the batter as well, or topping.

Whatever you use, be sure to buy good quality sprinkles. $1 section and cheap sprinkles will be more likely to melt into your cake or frosting.

Overhead shot of 6 photos showing the process of making homemade funfetti cake

How to make Homemade Funfetti Cake

  1. Whisk the dry ingredients and set aside.
  2. Mix together the melted butter and sugar with an electric mixer (I use the paddle attachment). Then mix in the eggs and vanilla on medium speed.
  3. Add some of the flour mixture into the wet ingredients and gently incorporate.
  4. Add half the buttermilk mixture and then continue incorporating flour and buttermilk, ending with the flour. Do not over mix.
  5. Stir rainbow jimmies into the cake batter. Bake cake and cool.
  6. Frost as desired!

Best Homemade Frosting for DIY Funfetti Cake

I love a simple vanilla buttercream for this cake. I have a whole post about how to make vanilla buttercream frosting, but you can also use chocolate frosting or cream cheese frosting! Or use Funfetti Frosting!

How to Decorate Confetti Cake

Since this is a funfetti sheet cake, it’s super easy to decorate it. You can leave it in the pan and just frost the top with icing, then sprinkle with additional sprinkles.

If you want to be able to remove the cake from the pan, be sure to line the pan with parchment or foil and spray with baking spray (the kind with flour).

Homemade funfetti cake in a cake pan with vanilla frosting and rainbow sprinkles

Expert Tips for Funfetti Cake

  • Why this recipe works: This cake is a variation of my yellow layer cake that I love so much, except I baked it in a 9×13-inch pan.
  • Room temperature ingredients help the vanilla cake stay moist and fluffy.
  • Be sure your baking powder is fresh and not expired.
  • Make it Gluten Free: This cake also works with gluten-free 1:1 all purpose flour.

What can you substitute for buttermilk?

If you don’t have buttermilk you can make your own by adding 1 teaspoon lemon juice or white vinegar to your measuring cup and filling it with milk to the 1 cup line.

However, this recipe also works with regular milk and nondairy milk, I just like the extra fluffiness and moisture that the buttermilk lends.

Substitute buttermilk with sour cream: use 3/4 cup sour cream and stir in 1/4 cup milk.

How to decorate confetti cake?

The best way to decorate this cake is to frost it and sprinkle it with more sprinkles! I find it’s easiest to frost cake with an offset spatula.

If you want to decorate the outside of the cake, line your pan with foil or parchment and spray with nonstick cooking spray. Then remove it from the pan and frost the sides of the cake too.

Can I make this into a layer cake?

Yes! I have made this cake in two 9-inch rounds, three 8-inch rounds, and 24 cupcakes. Then stack the cake layers with frosting between them.

One square slice of homemade funfetti cake on plate surrounded by rainbow sprinkles

Best Funfetti Cake FAQ

How to store funfetti cake?

Store loosely covered with plastic wrap on the counter. You do not need to refrigerate it.

Can you freeze this cake?

Yes – wrap it tightly and freeze. Can be frozen before or after frosting.

Can I make cupcakes?

This recipe makes 24 cupcakes.

How do you know when your cake is done baking?

Use the toothpick test in the center of the cake – it’ll come out with just a few crumbs.

Why is my cake dry?

Be sure to use full fat ingredients, do not make substitutions, and do not over bake.

Is funfetti cake just white cake with sprinkles?

Funfetti Cake is a soft yellow cake with sprinkles, and often has just a bit more sugar than regular yellow cake. Otherwise they’re basically the same recipe.

This cake is sure to be a huge hit with your family. I hope you enjoy my favorite funfetti birthday cake – and try not to eat the entire cake in one sitting. I can definitely do that!

Other Favorite Recipes

Have you made this recipe?

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slice of funfetti cake on plate

Homemade Funfetti Cake

3.67 from 3 votes
A from scratch Homemade Funfetti Cake is the perfect cake for any birthday or occasion! Fluffy white cake mix is full of sprinkles, topped with a heavenly sprinkle buttercream frosting!
Prep Time 15 minutes
Cook Time 40 minutes
Total Time 55 minutes
Yield 12 servings
Serving Size 1 serving



  • 2 cups all-purpose flour 248g
  • 2 teaspoons baking powder
  • ¾ teaspoon salt
  • 1 cup unsalted buter, melted 227g
  • 1 ½ cups granulated sugar 297g
  • 4 large eggs
  • 1 tablespoon vanilla extract 15ml
  • 1 cup buttermilk (see note) 237 ml
  • 1 cup rainbow sprinkles


  • 1 cup unsalted butter, softened 227g
  • 4 cups powdered sugar 452g
  • 1 tablespoon vanilla extract 15 ml
  • 1/2 teaspoon salt
  • 2-5 tablespoons heavy whipping cream 30-75ml
  • 1/2 cup sprinkles plus more for topping


  • Preheat oven to 350°F. Grease and flour a 9×13-inch baking pan.
  • Whisk flour, baking powder, and salt in a medium bowl. Set aside.
  • Mix butter and sugar on medium speed in a large bowl using a hand or a stand mixer until smooth. Mix in eggs one at a time, then mix in vanilla.
  • Add the buttermilk alternately with the dry ingredients, mixing between each, starting and ending with the buttermilk, and mixing just until the batter comes together. Stir in sprinkles.
  • Pour batter into prepared pan. Bake for 30-40 minutes or until a toothpick comes out with just a few crumbs sticking too it. Cool completely before frosting.
  • To make the frosting: beat butter with a hand or a stand mixer until creamy. Slowly add in powdered sugar, 1 cup at a time, until a crumbly mixture forms. Mix in vanilla and salt, then add 2 tablespoons heavy cream. Mix until smooth, adding more cream until you reach your desired consistency. Stir in sprinkles.
  • Frost cake with frosting and top with more sprinkles. Store loosely covered for up to 2 days.
  • Also makes 24 cupcakes or two 8-inch rounds.

Recipe Video

Recipe Notes

To make your own buttermilk, add 1 teaspoon vinegar or lemon juice to a measuring cup then fill with milk to make one cup. Let sit for 5 minutes.

Recipe Nutrition

Serving: 1serving | Calories: 404kcal | Carbohydrates: 53g | Protein: 5g | Fat: 20g | Saturated Fat: 1g | Cholesterol: 64mg | Sodium: 2540mg | Fiber: 1g | Sugar: 34g
Nutritional information not guaranteed to be accurate
Course Dessert
Cuisine American
Author Dorothy Kern
Keyword cake

**Did you make this recipe? Don’t forget to give it a star rating below!**

If you love sprinkles and cake, be sure to check out my list of Funfetti Recipes as well as my round-up of Funfetti Recipes from my favorite bloggers! And be sure to check out Julianne’s Funfetti Cream Pie Cupcakes, Deborah’s Funfetti Frosting (OMG!), and Stephanie’s Funfetti Brownies!

Whew you guys, you are lucky you’re getting a post today. It got to 4pm yesterday and I hadn’t showered yet, so that let’s you know what kind of a day it was.

I mentioned on Sunday that I was in the Bay Area for a conference. It was 2 full days of nonstop brain power usage, which was exhausting. On Saturday, a few of us went to San Francisco for the night. We stayed up too late drinking wine and laughing and then got up early Sunday morning so they could fly home. Now I’m home and back at work after really not working for 2 weeks and there’s so much to do. Plus: Saturday night is Jordan’s birthday party night.

If you have followed this blog, you’ll know that I set high standards for birthday parties when Jordan was young. There was the rainbow party, the VIP dance party, Annie, and (my favorite so far), the Taylor Swift birthday party. She’s used to elaborate decorations, custom designed (by me) invitations, themed foods and activities and fun (and sleepovers). These started with her third birthday and have gone from there.

Piece of advice: don’t do what I did. Start out being that parent that just makes chill parties. Then if you do ever go big the kid will be in awe. Now, I’m stuck.

This year is a Stranger Things Party. Hopefully at some point I’ll have a post to share with you. Until then, we can talk about birthday CAKE which is always delicious, especially when there are sprinkles.

cake slice on white plate

The best easy homemade funfetti cake! This confetti cake recipe is from scratch with buttercream and sprinkles – it’s the best sheet cake recipe!

Last Updated on April 25, 2022

Dorothy Kern

Welcome to Crazy for Crust, where I share recipes that are sometimes crazy, often with a crust, and always served with a slice of life.

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Recipe Rating


  1. What a waste…. I’m sorry ( but not sorry) I wasted so much product and money doing this cake and it stuck to my pans, and crumbled. Not a good taste really either smfh. Please save your time and energy … my kids are disappointed and so am I

    1. I am so sorry that happened to you! This should not have done that. Let’s troubleshoot a bit:
      *Did you grease your pans or use parchment or cooking spray?
      *How long did you bake it? Did you pull the cake out when a toothpick came out clean?
      *Dryness and cracking is usually caused by over baking or using too much flour. Did you pack your flour or make any substitutions?
      *What size pan(s) did you use?

  2. Got your new cookbook really love it a little disappointed that you didn’t include tips like the vinegar tip you posted. I was looking forward to the extra tips

    1. There are tons of tips in the book – ones that pertain to the recipes in it. I don’t think the vinegar tip is necessary for any of those cookie recipes.

  3. Wow wow wow, after trying 6 different recipes for a Funfetti cake I finally found the perfect one with this recipe. Made it as a double layer cake for my moms 56th birthday and it came out perfect! Super moist and buttery even 4 days later and tastes exactly like funfetti cake, she loved it! Thanks so much for this recipe, it really did save the day and helped make the birthday girl very happy!

  4. With parties and entertaining of any kind, you have impeccable standards and don’t miss one single thing! Every detail is perfect! Happy early Bday to Jordan and good luck this weekend with her party!