Preheat the oven to 160°C fan.
Lightly grease and line three 4 inch round cake tins (or two 6 inch tins) with
baking paper.
Cream together the caster sugar
and baking spread in a bowl for 2 mins, until light and fluffy.
Add the eggs, oil and vanilla
extract, along with a large spoonful of the flour and beat together.
Fold the remaining flour into the
mixture with the milk, using a spatula/metal spoon.
Divide the mixture in 3 and add
your chosen food colouring to each.
Add equal amounts of the mixture
to each tin by randomly adding spoonful’s of each colour.
Using a knife or skewer, swirl
the colours together and then bake in the oven for 25-30 mins.
Leave the sponges in the tins for
10 mins, then remove and cool on a wire rack.
Buttercream
With a handheld or stand mixer, beat
the butter for 2-3 mins until pale and fluffy.
Add a third of the icing sugar
and beat again until combined. Repeat for each third of the icing sugar.
Add the vanilla extract and milk
and beat the buttercream for 5 mins. If you are working in a warm environment,
less milk may be required.
Take a quarter of the buttercream,
cover it with cling film and set aside. You will be colouring and using this
later.
Decorating
Assemble the cake by adding a
thin layer of buttercream to the first sponge. Then add a thick ring of
buttercream around the edge and fill the centre with half the jam. Add the next
sponge and repeat, then place the third sponge on top.
Cover the cake with a thin crumb
coat (layer of buttercream covering the whole cake). Place the cake in the
fridge for at least half an hour to chill.
Once the crumb coat is firm,
cover the cake with the remaining uncoloured buttercream, using a palette knife
or straight edged cake scraper to smooth it. Put the cake back in the fridge
for at least an hour.
When you are almost ready to
decorate the cake, take the buttercream you set aside earlier and split it into
3.
Colour the buttercream with your
chosen colours.
Using a 9 inch palette knife and
starting two thirds of the way down the cake, take a small amount of buttercream
and smear it on the cake in an upwards direction.
Repeat this by randomly using the
different colours and work your way up the cake, finishing in the centre of the
top of the cake.
Tips
If you don’t have 4 inch cake
tins, this recipe will make a two layer 6 inch cake.
By folding in the flour for your
sponge mix with a spatula or metal spoon, this ensures the air bubbles in the
mixture are retained and it will help make your cake mixture light.
You can use unsalted butter
instead of baking spread for the sponge, just make sure the butter is at room
temperature.
Cover your buttercream with cling
film when you are not using it to stop it crusting on top.
The firmer the cake for each
buttercream step the better.