Funfetti is one of those cakes that looks as though it was invented by a child with excellent judgement. Pale vanilla sponge, rainbow sprinkles baked through every layer and a slice that arrives already dressed for a party. But what actually makes a cake Funfetti, what does it taste like, and is it simply rainbow cake in disguise?
As cake makers, we have baked rather a lot of it. Here is the useful version.
What is Funfetti cake?
Funfetti cake is a vanilla cake with colourful sprinkles baked directly into the sponge. During baking, the sprinkles soften and leave little flashes of colour through the crumb, so every slice is speckled rather than striped or layered.
The important bit is that the cake itself is still vanilla. The sprinkles bring colour and a little sweetness, but they should not turn the sponge into a sugary novelty. A good Funfetti cake still needs a soft crumb, proper vanilla flavour and a frosting you would happily eat without the sprinkles.
If you are looking for one rather than researching one, you can see our full range of Funfetti cakes.
What flavour is Funfetti?
Classic Funfetti tastes of vanilla. We use Madagascan vanilla in our sponge and pair it with silky Swiss meringue buttercream, which is lighter and less sugary than the heavy icing you sometimes find on sprinkle cakes.
The sprinkles are there to make the sponge joyful, not to do all the flavour work. Depending on the design, we then add things such as strawberry jam, cookie dough, Smarties, handmade truffles, cherries or a piñata centre.
Funfetti cake versus rainbow cake
They are cousins, not twins. A Funfetti cake normally has a pale vanilla sponge with coloured sprinkles baked through it. A rainbow cake uses deliberately coloured sponge layers, usually stacked to create a rainbow when the cake is cut.
If you want the colour to appear as little confetti-like flecks, choose Funfetti. If you want a dramatic stack of coloured layers, choose rainbow cake. Both are excellent at making a table look less serious.
Why the sprinkles matter
Not every sprinkle behaves well in a cake batter. Very delicate decorations can dissolve, bleed or turn muddy before the sponge is baked. We want clean flecks of colour through the crumb, so the type of sprinkle matters as much as the quantity.
There is also a point where enthusiasm becomes sabotage. Too many sprinkles can interfere with the texture of the sponge. The aim is enough colour to make every slice look celebratory while keeping the cake soft and vanilla-led.
What frosting goes best with Funfetti cake?
Vanilla buttercream is the classic answer, and for good reason. It gives the sprinkles room to be loud while the flavour stays elegant. We use Swiss meringue buttercream because it is silky, light and less sweet than a traditional icing-sugar buttercream.
Strawberry also works beautifully with Funfetti, as do chocolate, cookie dough and a little salt or crunch. The trick is not to throw every sweet-shop flavour at the cake simply because the sponge has sprinkles in it.
Why is Funfetti such a birthday cake?
Because it reveals itself. From the outside a Funfetti cake can look polished and grown-up; cut into it and the sponge is suddenly full of rainbow flecks. That little reveal makes it particularly good for birthdays and children’s parties, but we make plenty for adults who quite reasonably refuse to outgrow sprinkles.
Our Funfetti Supreme Birthday Cake keeps things classic with vanilla sponge, Swiss meringue buttercream, cupcakes, cherries and sprinkles. Other designs push the idea further with hidden piñata centres, truffles or cookie dough.
How should you store a Funfetti cake?
Funfetti follows the same basic storage rules as other buttercream celebration cakes. Keep the cake boxed, cool and away from direct sunlight or heat, and follow the care instructions supplied with the particular cake. If it has been chilled, give the sponge and buttercream time to soften towards room temperature before serving.
There is a surprising amount of science behind why cold cake tastes flatter and firmer. We explain it properly in our guide to whether cake needs to be refrigerated.
Ordering a Funfetti cake in London & Surrey
Our Funfetti cakes are baked to order in our London kitchen and hand-delivered across London and Surrey by our own drivers. Where the individual cake allows it, you can add a name, date or short chocolate plaque message; sizes and other options are shown on each product page.
For a completely different design, hand-modelled toppers or a more detailed visual brief, use our custom cake route. Otherwise, head straight to the Funfetti cake collection and choose the one that makes you grin first.
Reshmi x
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