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birthday cake with coloured candles

Birthday Cake Ideas For Siblings

If you are considering baking a cake for siblings with their birthdays close together, you may want to try one of these birthday cake ideas.

Makes sense, right?

There's really no point in baking two cakes when you can just bake one big cake and decorate it to please both siblings.

Here are some ideas for how to make a special birthday cake that will make both siblings happy on their special day.

What Is The Most Popular Cake For Birthdays?

Top Birthday Cake Flavours

Chocolate (Milk or Devils-food)

The reason why chocolate is considered to be the most popular type of birthday cake flavours is that this dark, sweet, and rich dessert is perfect for any age group.

For those who are chocoholic, having a chocolate cake on their birthday is like a dream come true!

Marble (Fudgy)

Marble cake is one of the most commonly requested birthday cake flavours.

This cake is perfect for those who can't make up their minds between chocolate and vanilla. 

The two flavours are swirled together in a beautiful pattern, making it a delicious and elegant dessert.

Add a bit of extra pizazz and make it chocolate fudge marble cake - we promise it'll go down a storm!

White Chocolate Coconut/Chip

If you're looking for something a little bit different, try this unique combination.

White chocolate and coconut is such an underrated but delicious flavour pairing that is perfect for birthdays.

Whether you make a white chocolate cake with a hint of coconut or go all out and make a white chocolate coconut cake, we know it'll be a hit!


Move over, chocolate cake - there's a new birthday cake in town!

Cheesecake is fast becoming one of the most popular birthday cakes, and we can see why.

It's rich, creamy, and can be made in so many different flavours. From classic New York cheesecake to strawberry swirl cheesecake to baked ones, there's something for everyone.

Red Velvet

This classic Southern US cake is perfect for birthdays - the deep red colour is stunning, and the flavour is unique and delicious.

Whether you make a traditional red velvet cake or add your own twist, it is sure to be a crowd-pleaser.


A carrot cake may not be the first thing that comes to mind when you think of birthday cakes, but it is a fantastic option!

Carrot cake is moist, flavourful, and can be made in both single and double-layer versions. It's also perfect for those who are looking for a healthier option as it contains carrots (obvs)!


If you're after a refreshing and zingy birthday cake, look no further than lemon.

Whether you make a classic pound cake or something a little more creative like a Meyer lemon olive oil cake, it's guaranteed to be delicious.

Angel food

For those who are looking for a lighter option, angel food cake is perfect.

This fluffy and airy cake is made with only egg whites and is often served with fruit or whipped cream.

What 3 Cake Flavours Go Well Together?

Chocolate and Vanilla

This classic flavour combination is perfect for those who can't decide between chocolate and vanilla.

Both flavours are rich and delicious, and they go so well together!

Chocolate and raspberry is another fantastic flavour combination that would be perfect for a birthday cake.

Lemon and Blueberry

Lemon and blueberry is such a refreshing and zingy flavour combination.

The sweetness of the blueberries pairs perfectly with the tartness of the lemon, making it a delicious and unique flavour combination.

Carrot and Spice

Carrot cake is a classic birthday cake flavour, but did you know that adding a little bit of spice can take it to the next level?

A touch of cinnamon or nutmeg gives the cake a warm and cosy flavour, making it perfect for winter birthdays.

Top 3 Popular Cake Flavour Combinations

Chocolate cake with chocolate ganache and mocha filling

For all the chocolate-lovers, this is a home-run!

This cake has a rich chocolate flavour, with a smooth and creamy chocolate ganache filling. The mocha filling adds a touch of coffee to the cake, making it even more delicious!

Red Velvet Cake with Cream Cheese Frosting

This is a classic red velvet cake recipe, but with a delicious cream cheese frosting.

Orange Cake with Vanilla Buttercream Frosting

This orange cake is a refreshing and vibrant option for summer birthdays.

The vanilla buttercream frosting gives it a beautiful sweetness, making it the perfect cake for those with a sweet tooth!

What Do You Put In Between Cake Layers?

Once you have settled on the flavour of the sponge, it's time to  decide what to put in between the cake layers.

There are so many different options, from buttercream and ganache to fresh fruit  and preserves. 

Here are some of our favourites:


Buttercream is a classic choice for filling cake layers. It's smooth, creamy, and can be made in a variety of flavours.

Chocolate Ganache

Chocolate ganache is a rich and decadent filling that is perfect for chocolate lovers. It's made with chocolate and cream, and can be either poured or spread onto the cake layers.

Swiss meringue buttercream

Swiss meringue buttercream is a light and fluffy buttercream that is made with egg whites and sugar. It's perfect for those who are looking for a lighter option.

Stiff frosting

A stiff frosting, such as royal icing, is perfect for decorating cakes. It can also be used to fill and crumb-coat cakes.

Fresh Fruit

Fresh fruit is a fantastic way to add some natural sweetness to the cake. berries, cherries, and diced apples are all great options!

What Is The Best Way To Store Your Birthday Cake?

Once your cake is all iced and decorated, it's important to store it properly so that it stays fresh and delicious.

Here are some tips for storing your birthday cake:

  • Store the cake in a cool, dry place.
  • If the weather is hot, store the cake in the fridge.
  • Wrap the cake in cling film or foil to keep it fresh. If you have any leftover cake, store it in an airtight container in the fridge.

Wrapping Up:

So, if you are looking for something different and unique this year for your sibling’s birthday cake, why not try one of these ideas? They will definitely be a hit!

Do you have any other great ideas that we missed?

 Let us know in the comments below.

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