How To Make a Marble Cake

I posted a while ago about making a cute heart cake for Valentine’s Day, and it worked really well so I decided to use the cake tin again for a marble cake.  Actually, I was tempted to make a proper rainbow cake, with all the stripes but generally you make lots of cakes and pile them up.  That sounded tricky when I only have one cake tin and it’s shaped like a heart, so I thought I’ll got for more of a splodgy marble cake look.


Using a little heart tin I had to reduce the quantities down from a normal recipes.

For the cake-
45g margarine
45g caster sugar
44g plain four and 1/4tsp baking powder
pinch of salt
2/3 egg (might be messy to split that up!)
red, blue, and green food colouring

For the buttercream-
25g margarine
75g strawberry flavoured icing sugar
red food colouring


Making the cake is pretty simple. I mean, I managed it.

Preheat your oven to 190 Celsius (which google informs me is 374 Fahrenheit, which seems a suspiciously specific imo). And grease your cake tin. Top Tip- after greasing, sprinkle with flour to prevent sticking.

In one bowl blend the caster sugar and margarine, in another mix the flour, baking powder, and salt.  Slowly sieve the flour mixture into the marge mixture, and keep mixing.  At the same time slowly add the egg.  That sort of takes about 5 arms so don’t worry too much if you can’t mix and stir at the same time.

marble cake

Once it’s a nice smooth mixture separate out into thirds in three separate containers.  Then add a different food colouring to each third.  Then pour one into your tin at a time, I tried to do it in smoothish layers. Then put in oven for about 20mins, until a skewer comes away clean.

marble cake

My cake went a little bonkers and peaked quite a lot in the middle, so I actually used a bread knife to cut the top of before I iced it.  For the icing, just mix the margarine and icing sugar together and spread it all over.  I added red food colouring to the icing, which gave it a pink hue. I also covered mine in orange sprinkles because why not?

Top Tip- It always take much more icing sugar than you think so start with a little marge and add the icing sugar to it.

marble cake

It wasn’t until we cut into it that I could see if my marble cake was indeed marbly…and it was!  At some point I need to get a grown up cake tin and make a real cake.  But actually for two people this is the perfect size.