Funfetti Birthday Cake

Funfetti Birthday Cake

Funfetti Birthday Cake is sometimes known as confetti cake, but I prefer the name funfetti because this cake really is so fun! It’s made by mixing rainbow sprinkles into the cake batter which creates the effect. Then I’ve decorated it with more sprinkles on top! It’s perfect for a party, and especially birthdays! I first made this Funfetti Birthday Cake for my birthday, which is why I’ve named it as such. It’s flavour is simple vanilla, which is that classic flavour that everyone loves.

Step by step…

I made the sponge by creaming together butter and caster sugar. Then I added the eggs, two at a time, and mixed between each addition. I then added vanilla extract, and finally folded in self raising flour.

Then I added sprinkles!

I divided the mixture equally between the tins and baked the cakes for 35 minutes, then I left them to cool fully.

Next I made the buttercream by mixing butter, icing sugar and vanilla extract together until smooth.

On a plate I started stacking the layers and piping buttercream between each one.

I put on the final layer of sponge and smoothed icing all over the top using a palette knife to smooth it out.

Then I piped swirls around the edge and I filled the middle with more sprinkles!

Funfetti Birthday Cake

The Funfetti Birthday Cake is so pretty when cut into! It has such a colourful and festive appearance. The bright rainbow colours of this Funfetti Birthday Cake are what make it stand out, and the light vanilla sponge and sweet vanilla buttercream give it lovely flavour.

Recommended equipment & ingredients*

8″ cake tins Electric hand mixer Piping bags
Round cake tin liners Mixing bowls Funfetti sprinkles
Cooling rack Wilton 8B Piping nozzle Kitchen scales

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More funfetti recipes…

Funfetti Vanilla Cupcakes
Funfetti Vanilla Cupcakes

Funfetti Birthday Cake

Vanilla cake with rainbow sprinkles in the sponge, vanilla buttercream and decorated with rainbow sprinkles

Course Dessert
Cuisine American
Keyword Cake
Prep Time 30 minutes
Cook Time 35 minutes
Decorating time 20 minutes
Total Time 1 hour 25 minutes
Servings 14
Author thebakingexplorer


For the cake

  • 500 g Butter or baking spread
  • 500 g Caster sugar
  • 9 Eggs large
  • 3 tsp Vanilla extract
  • 500 g Self raising flour
  • 75 g Sprinkles

For the buttercream

  • 900 g Icing sugar
  • 450 g Butter or baking spread
  • 2 tsp Vanilla extract

For decoration

  • 25 g Sprinkles


  1. Pre-heat your oven to 160C Fan/180C/350F/Gas Mark 4, and grease and line three 8" cake tins

  2. Mix together the butter and the caster sugar until smooth

  3. Add the eggs, two at a time, and mix between each addition

  4. Then add the vanilla extract, and whisk in the self raising flour

  5. Fold in the sprinkles

  6. Divide the mixture equally between the tins

  7. Bake the cakes for 35 minutesΒ or until a skewer inserted in the middle comes out clean. Remove from the tins and leave them to fully cool on cooling racks

  8. To make the vanilla buttercream mix the butter and icing sugar together. Once it starts to come together add the vanilla extract and mix until smooth. I use my electric hand whisk to do this but you can also do it by hand with a spoon

  9. If the cakes have domed on top, level them off with a cake leveller or a serrated knife

  10. Stack the cake layes, piping or spreading buttercream between each layer

  11. On the final sponge, smooth icing over the top and smooth it out using a palette knife

  12. Then use a piping bag with a star nozzle to pipe swirls around the edge and fill the middle with more sprinkles!

  13. Leftovers will keep in an airtight container in a cool place for 2-3 days

If you like this, check out more of my Cake recipes!

Funfetti Birthday Cake

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14 comments / Add your comment below

  1. I'm looking at making a funfetti cake for a friends birthday this week πŸ™‚ Which sprinkles you used as they look like they've kept their colour really well during the bake! A lot of the supermarket ones look really pale and I'm worried they won't survive the heat too well…

    Jen x

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