Bake Play Smile
Place the butter, caster sugar, salt and vanilla extract into a bowl. Beat together with a stand-mixer or hand-held beaters until pale and fluffy (approximately 5 minutes).
Slowly add the eggs one at a time while continuing to beat through, until completely combined.
Sift in the self raising flour and gently fold through with a spoon until just combined. Don't over-mix otherwise your cake can turn out heavy.
Divide the mixture equally between three bowls. In the first bowl, add one drop of pink food colouring and mix to combine. In the second bowl, add the cocoa powder and milk and mix to combine. Leave the remaining mixture plain.
Place spoonfuls of the mixture into the prepared baking tin. Use a knife to gently swirl the three colours to create a pattern. Place in the preheated oven and bake for 25-30 minutes or until tested with a skewer.
Spread the buttercream frosting over the cooled marble cake.