Mini Vanilla Cake (Small Batch Bakes)
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A cute little 4″ mini vanilla cake – the perfect small batch cake, bento box size cake, or for a mini celebration.

Small batch baking
A couple years ago I started posting some small batch baking recipes, as most of my recipes are designed to serve a family, crowd, or even be put in the freezer if you have any spare portions. I realise this isn’t realistic for everyone, so the small batch bakes series was born.
These small batch bakes recipes are all about the intention to bake something delicious, and it serves the correct amount of people. They typically serve 2-6 people, depending on how they are portioned or served, and it’s a series for those of you who want to bake specifically for something, for those of you who don’t want to put some in the freeze when you’ve fixed your craving, or you simply don’t want to use as many ingredients on one bake.

My small batch bakes
Take a small batch NYC chocolate chip cookies, for example. These cookies still deliver everything you expect from the classic bakery favorite: thick centers, crisp edges, and generous pockets of chocolate. But by scaling the recipe down, to serve just two, it’s ideal for a casual weekend dessert, a small gathering, or simply treating yourself without having loads left over.
The same philosophy applies to my chocolate cake for two recipes. Rather than pulling out multiple pans or dealing with layers of leftovers, a small cake offers all the richness and comfort of a traditional chocolate cake, perfect for date nights, or because you really do just have that choccy cake craving like I often do.
My small batch triple chocolate brownies round out the appeal of baking on a smaller scale. These serve 4-6 slices, that are fudgey, moreish and still just as good as the full-size batch version that has been on my blog for many years.

A mini cake?
Last year I posted a video celebrating my blog’s 11th birthday, and I decided to make a mini cake as they are adorable to look at, and I wanted to just bake a small cake as I really was in the midst of so much recipe testing, I didn’t need a huge cake as well.
Using some very cute 4” cake tins, I made a simple yet delicious mini cake with a buttercream centre, outside and sprinkles and you guys went mad for it. Other than that, I get requests for a 4” cake recipe almost daily as people often use it for bento box style cakes, so this is the perfect bake for that.

Sponge recipe
When it comes to a sponge of this size, it’s harder to make a simple cake sponge, but I made it as easy as possible. I usually always use medium eggs when I am baking, for consistency and for ease as well. When baking simple sponges, it’s usually based on ratios, of equal parts of butter, sugar, flour and eggs.
The best way to start a sponge that is so small, is to weigh the eggs in their shells, and then match the weight of the flour, sugar and butter to that weight. So when I filmed this recipe, my two medium eggs were 118g, so I then used 118g of unsalted butter (or baking spread), 118g of self raising flour, and 118g of caster sugar. You then add in the flavour (on this occasion, vanilla).
If you have larger eggs, that’s okay, you just need to match to that weight, and then bake for a little longer (and your sponges will be slightly taller). This recipe is designed to make a 4 layer, 4″ cake – so I bake into two 4″ cake tins. I baked at a lower temperature so that the cakes had a flatter top, and were easier to use later on.
At 140ºc in a fan oven, it takes about 35-45 minutes to bake. It’s worth checking the cake from about 30 minutes, but expect it to take between 35-45 minutes. I check it with a skewer, and check to see if it’s making a bubbling/crackling sound (if it’s making a sound, it needs a little longer), and then I leave the cakes to cool fully in the tin.

Decoration
When it comes to decorating such a small cake, it’s easier and also a little harder at the same time. It’s easier, because there is less to do in theory as it’s so much smaller, but also, mini can mean fiddly. I went for a simple vanilla buttercream as you don’t need much at all, and it worked wonders.
Beating the room temperature unsalted butter on its own, mixing in icing sugar and some vanilla bean extract, it is thick and smooth, ideal for a drip cake. If you find the buttercream is slightly too thick, you can add 1tbsp of boiling water, mixing it in really well to soften, but you don’t want to add too much.
I use a large piping bag to pipe borders around each layer of sponge, then used a little homemade jam in the middle for flavour. I then used the same buttercream in the piping bag to pipe some around the edges of the cake. I then used a metal cake scraper to smooth the edges to create a crumb coat, and chilled it int he fridge for 30 minutes.
Piping more buttercream on top of the crumb coat, I smoothed around the edges again to create the look you can see in the images, and used the last of the buttercream to pipe swirls on top with a 2d closed star piping tip, perfect for decoration and a base for some sprinkles.

Tips & Tricks
- I used two of these cake tins in this recipe
- I use a large piping bag to fill and decorate the sponge
- I used a 2d closed star piping tip for the decoration on top
- I also used some super bright sprinkles for decoration
- I used this metal scraper for the crumb coat and finished look
- This cake will last for 3-4 days, at room temperature
- You can freeze this for 4+ months
- This cake serves 4-6 slices of cake


Mini Vanilla Cake
Equipment
Ingredients
Cakes
- 2 medium eggs (weighed in shells - mine were 118g)
- 118 g caster sugar *see method below
- 118 g unsalted butter/baking spread
- 118 g self raising flour
- 1 tsp vanilla extract
Decoration
- 125 g unsalted butter (room temp)
- 250 g icing sugar
- 1 tsp vanilla extract
- sprinkles
- 50-100 g jam
Instructions
Cake
- Preheat the oven to 160ºc/140ºc fan and line the base of two 4" cake tins
- Weigh the eggs in their shells (I use medium) and grab the weight.
- Mine weighed 118g, so I then used 118g of sugar, flour and butter.
- Add the butter and caster sugar to a bowl, and mix together until combined
- Add the eggs, flour and vanilla to the bowl, and mix
- Split the mixture between the two tins, and bake in the oven for 35-45 minutes. Check from 30 minutes
- Leave to cool in the tin, or on a wire rack after 15 minutes
Decoration
- Beat the room temperature butter on it's own until smooth
- Add the icing sugar and beat again
- Add the vanilla and mix. If it's really thick, add 1-2tbsp boiling water to soften slightly, but only if essential.
Assembly
- Cut each cake in half, so you have four layers in total.
- Stick the first layer down onto a plate/dish and then pipe a small border of buttercream around the edge of the sponge
- Fill the middle in with jam
- Repeat this with two more layer of sponge, and then add the last on top.
- Use a small amount of buttercream around the edges to create a crumb coat, smoothing with a scraper or angled spatula. Chill the cake for 30 minutes
- Add on more buttercream, and smooth around again until smooth
- Pipe any leftover buttercream on top
- Add sprinkles and eat
Notes
- I used two of these cake tins in this recipe
- I use a large piping bag to fill and decorate the sponge
- I used a 2d closed star piping tip for the decoration on top
- I also used some super bright sprinkles for decoration
- I used this metal scraper for the crumb coat and finished look
- This cake will last for 3-4 days, at room temperature
- You can freeze this for 4+ months
- This cake serves 4-6 slices of cake
- You can increase the buttercream to 150g butter and 300g icing sugar if you want a thicker buttercream layer