Beat 600g of sifted icing sugar and 300g butter together
Divide into three separate bowls and add a colour to each one
Mix each bowl till the mixture is smooth
using a palette knife, apply the buttercream to a 6" cake using a spoon full of each buttercream around the sides
To decorate
Smooth your intergalactic cake with the palette knife and the colours will begin to smudge into each other, giving it that gorgeous galaxy vibe
Sprinkle our Cake Angels Intergalactic Sprinkles around the surface and top of the cake - add some of the stars and sprinkles to the sides too for extra, intergalactic depth!