This easy to make Funfetti Sheet Cake is as tasty as it is vibrant! Topped with strawberry cream cheese frosting, this moist, sweet, and sprinkled sheet cake is definitely a huge hit wherever it’s served. Make it for birthday parties, baby showers, and any other fun occasions!

A slice of sheet cake is presented on a white plate.

Funfetti Sheet Cake

There’s nothing more fun than funfetti, right? I mean, it’s really just vanilla with the addition of sprinkles… But I swear, rainbow sprinkles make everything more delicious! With that being said, this sheet cake recipe would be a timeless staple with or without the sprinkles. Thanks to the perfect amount of buttermilk that’s mixed into the batter, this cake is the moistest, softest, and fluffiest sheet cake you’ll ever have. It doesn’t hurt that it’s so pretty to look at, of course!

To top it all off is sublimely sweet strawberry cream cheese frosting, which I could honestly eat all by itself with a spoon. You only need four simple ingredients to whip it up, and you’ll probably fight with your kids over who gets to lick the spoon! Of course, you also can’t forget the addition of sprinkles on top of the frosting to really sell that funfetti signature look.

When it comes to serving this cake, I think the best question to ask is “where shouldn’t I serve Funfetti Sheet Cake?” The list of occasions that wouldn’t be better with this cake is way shorter than the places you should be serving this cake at! Birthday parties seem the most obvious, but really any party is better with a Funfetti Sheet Cake. Plus, it serves about 18-20 people, depending on how you slice it. It’s perfect for serving a large crowd!

A frosted, sprinkled, and sliced sheet cake is presented on a white surface.

How to Make It

Prepare your kitchen. Preheat the oven to 350ºF and line a 9” x 13” baking pan with parchment paper. 

Make the batter. In a large mixing bowl, add the flour, baking powder, bicarbonate of soda, salt and sugar. Whisk together to combine. Add the eggs, canola oil, buttermilk and vanilla extract and whisk until very smooth. Pour in the boiling water and whisk again until fully combined. Tip in the sprinkles and use a spatula to gently incorporate. The mixture will be very thin, this is normal! 

Bake the cake. Transfer the cake mixture to the prepared baking pan. Bake in the center of the preheated oven for 30 minutes or until the cake is golden brown, shrinking away from the sides of the  pan slightly and feel springy when touched with your finger.  

Cool. Leave the cake to cool in the pan before turning out onto a wire rack to frost. 

Make the cream cheese frosting. Put the soft butter and cream cheese into a mixing bowl and beat on a low speed until smooth and combined. Add the powdered sugar and strawberry preserve (or strawberry extract if using) and beat until smooth and creamy. At this point, you can add a touch of pink food coloring if you would like the frosting to be a brighter shade of pink.  

Frost the cake. Use a spoon to dollop the frosting on to the cooled vanilla sheet cake. Spread the frosting with an off set spatula into an even layer across the entire surface of the cake. Sprinkle with sprinkles, slice and enjoy!

A fork is piercing a piece of cake.

Ingredients Notes for Funfetti Sheet Cake

  • Buttermilk – If you don’t have buttermilk, you can substitute it with sour cream or plain yogurt. Alternatively, you can make your own buttermilk by adding 1 tbsp white wine vinegar or lemon juice to 1 cup of milk.
  • Oil – Use a flavorless oil such as canola oil or vegetable oil. 
  • Strawberries – You can substitute the strawberry preserve with 1 tsp of strawberry extract. We have found strawberry preserve to give the most authentic and natural strawberry flavor. 
  • Color – The strawberry preserve will add a hint of pastel pink to the frosting. Feel free to add pink food coloring for a more vivid color. 
  • Frosting – If the frosting is too runny simply add more powdered sugar a tbsp at a time. If it’s too thick you  can add a splash of milk or heavy cream.
A fork has removed a bite sized portion of cake from a slice.

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A frosted, sprinkled, and sliced sheet cake is presented on a white surface.

Get the Recipe: Funfetti Sheet Cake with Strawberry Buttercream

Party like it's your birthday with this easy Funfetti Sheet Cake is topped with a creamy Strawberry Buttercream for a dreamy dessert that's simple and perfect.
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Ingredients

For the sheet cake

  • 3 cups all purpose flour
  • 1 1/4 tsps baking powder
  • 2 1/2 tsps baking soda
  • 1 tsp salt
  • 2 cups white sugar
  • 3 eggs
  • 1/2 cup canola oil
  • 1 cup buttermilk
  • 2.5 tsp vanilla extract
  • 1 cup boiling water
  • 3/4 cup funfetti sprinkles

For the strawberry cream cheese frosting

  • 1 cup unsalted butter, softened
  • 1 cup cream cheese
  • 2 1/2 cups powdered sugar
  • 1/2 cup strawberry preserve or 1 tsp strawberry extract

To decorate

  • 1/2 cup Funfetti sprinkles

Equipment

  • sheet pan

Instructions 

  • Preheat the oven to 350ºF and line a 9” x 13” baking pan with parchment paper.
  • In a large mixing bowl, add the flour, baking powder, bicarbonate of soda, salt and sugar. Whisk together to combine.
  • Add the eggs, canola oil, buttermilk and vanilla extract and whisk until very smooth.
  • Pour in the boiling water and whisk again until fully combined. Tip in the funfetti sprinkles and use a spatula to gently incorporate. The mixture will be very thin, this is normal!
  • Transfer the cake mixture to the prepared baking pan. Bake in the center of the preheated oven for 30 minutes or until the cake is golden brown, shrinking away from the sides of the pan slightly and feel springy when touched with your finger.
  • Leave the cake to cool in the pan before turning out onto a wire rack to frost.
  • To make the cream cheese frosting, put the soft butter and cream cheese into a mixing bowl and beat on a low speed until smooth and combined.
  • Add the powdered sugar and strawberry preserve (or strawberry extract if using) and beat until smooth and creamy. At this point, you can add a touch of pink food coloring if you would like the frosting to be a brighter shade of pink.
  • Use a spoon to dollop the frosting on to the cooled vanilla sheet cake. Spread the frosting with an off set spatula into an even layer across the entire surface of the cake.
  • Sprinkle with Funfetti, slice and enjoy!

Notes

Funfetti Sheet Cake will last up to 5 days covered and stored at room temperature.
Calories: 463kcal, Carbohydrates: 63g, Protein: 4g, Fat: 22g, Saturated Fat: 10g, Polyunsaturated Fat: 3g, Monounsaturated Fat: 8g, Trans Fat: 0.4g, Cholesterol: 69mg, Sodium: 352mg, Potassium: 107mg, Fiber: 1g, Sugar: 44g, Vitamin A: 546IU, Vitamin C: 1mg, Calcium: 53mg, Iron: 1mg