Prep. Preheat the oven to 350 degrees Fahrenheit and grease three 8-inch round cake pans with cooking spray. Divide the batter. Divide the batter equally among 6 small bowls, giving each bowl around 1 1/3 cups of batter. Preheat the oven to 350 degrees Fahrenheit and grease three 8-inch round cake pans with cooking spray.

So, grab some food coloring and a box of cake mix, and let’s bake a rainbow cake! Easy Rainbow Layer Cake Recipe Add the final layer of cake on top, the frost the outside of the cake. Feel free to use my tutorial for frosting a smooth cake, if you like. Preheat the oven to 170C/150C Fan/Gas 3. Grease 6 x 20cm/8in loose bottom sandwich cake tins (approximately 4cm/1½in deep) and line the bottoms with greaseproof paper. Dust the tins with flour, then shake out the excess.

Ingredients

All you need for this one pan rainbow layer cake is a handful of pretty standard baking ingredients. Of course you could buy buttercream frosting or fondant, but my recipes are super easy and delicious! The oven temperature is a bit lower than normal, as I don’t want the sponges to brown too much. This also comes somewhat from the brands of colours that you use! Red food colouring, orange food colouring, yellow food colouring, green food colouring, blue food colouring and purple food colouring. for the sponge mixtures! Divide the remaining frosting between 6 bowls. I had about 1/3 cup of frosting per bowl, but you may have a little more or less, depending on how much you use to frost the cake. Shortening: Shortening is the secret ingredient for creating frosting with a melt-in-your-mouth texture.

Chilling your cake before decorating makes it so much easier! I find my favorite method is to wrap the individual cake layers tightly in cling film and chilling them in the fridge before I apply the crumb coat. And while you will need to split the batter and add the colors, you’ll use boxed cake mix to speed up the process.In a large mixing bowl, use an electric mixer to beat the cake mix, water, oil, and eggs on low speed for 30 seconds, then on medium speed for 2 minutes. Scrape the bowl occasionally. Eggs: Opt for large and fresh eggs when baking. It’s a good idea to let them reach room temperature before adding them to the cake batter. Make colorful cupcakes instead. Need a birthday cake alternative? Pipe a small amount of each colored batter into cupcake liners and bake for 15-18 minutes. Frost the sides. Then spread a light coat of frosting on the top and sides of the cake to seal in the crumbs. Then, finish the cake with the remaining frosting.

Color your fondant. After mixing 1 recipe of buttercream frosting and making 1 recipe of marshmallow fondant, split the fondant batch to add colors. Wrap the fondant tightly and securely until (and between)ready to use. Use gel food colors, not liquid. Gel gives brighter colors and won’t affect the consistency of the batter.Rainbow cakes are typically made for birthdays, but they are great for any occasion where people want something eye-catching and festive! Once my sponges are baked, I leave them to cool completely and freeze them wrapped in clingfilm over night so that they are easier to decorate the next day – but this bit is completely optional of course!! To make the buttercream, place the salted butter in the bowl of an electric mixer. Sift the icing sugar on top, bring the mixture together at a low speed, then beat at high speed for a few minutes until the mixture is pale and fluffy. Add the vanilla extract and beat to combine. And this cake is fairly straight forward to make, though it takes a little time. The time is primarily from dividing the cake batter and frosting and then dying everything six different colors. Time consuming, but easy to put together, and so worth it in the end! How to Make a Rainbow Layer Cake