A six-layer rainbow cake covered in fluffy white buttercream is sure to garner loads of oohs and ahhs the moment you cut that first slice! Paste food colourings work best, but you can use liquid or gel colouring, too. Best part? The cakes take just 15 to 20 minutes to bake and cool quickly, since they're so thin.
If you don't have six cake tins, you can get by with only three. Simply bake three coloured layers, remove from the oven, let cool slightly and then remove the cakes to a wire rack. The tins should be cool enough to handle by then, so wipe away any cake crumbs left in the tin and then grease with butter and line the bottoms with fresh rounds of baking parchment. Add the three remaining mixtures and bake as before.
Very good recipe very easy to follow and everyone loved the end result! Made it again with beautiful results! - 14 Aug 2014
Great recipe. Made a rainbow cake with skittles in the centre for my daughter's birthday. Aside from adding the skittles, the only thing I changed was to add philadelphia to the buttercream to make it a delicious cream cheese frosting. Cake is fab, looks amazing, my daughter says it's the best cake in the UNIVERSE! - 16 Oct 2016
Must have done something wrong as layers were so thin and delicate end cake had no height at all??? A lot of effort and fiddle for a disappointing result ☹️ - 19 Jan 2017