You will need:
A tasty vanilla cake batter
Gel colours in purple, blue, green, yellow, orange and red
6 equal sized bowls
6 spoons
2, 8″ round tins, lined and sprayed
1. Using my yummy 1-2-3-4 recipe as the base, I divided this into 6 bowls.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-002250.jpg?width=700&quality=10)
Each portion was coloured with food coloring gels to make deep colours.
2. Starting with the purple, pour it into the bottom of each tin.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-002812.jpg?width=700&quality=10)
3. Pour the blue batter onto the purple. It will spread the purple batter out to the edges of the tin.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-002924.jpg?width=700&quality=10)
4. Next, pour the green. Follow with the yellow, orange and end with the red.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-003711.jpg?width=700&quality=10)
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-003801.jpg?width=700&quality=10)
5. Once the batter it poured into the tins, gently rap the base of the tin on a folded towel, to spread it out.
6. Bake in a preheated oven for 30-35 minutes, or until the cake is done.
7. Cool the cakes, then wrap in cling film and freeze for a day.
Click on the next page for steps on making the frosting!
To frost and decorate, you need:
Buttercream of choice
Cake boards, 8″, 12″
Serrated knife
Offset spatula
Fondant
Gel colours
1. Tort the cakes to form 4 layers. You will have a vibrant rainbow cross section.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-004944.jpg?width=700&quality=10)
2. Use a little buttercream to “stick” down the first layer onto an 8″ cake board.
3. Use a good 1/2 cup of frosting between each layer, ending with the flat bottom of one of the cakes, on top. I left my buttercream white, as the cake was colourful enough, and I planned on putting a rainbow on the sides.
4. Crumb coat the cake. Chill. Then cover again with a generous coating of frosting.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-005747.jpg?width=700&quality=10)
5. While the crumb coat was chilling, I coloured my fondant, using the same 6 colours I’d used for the batter. I rolled thin cylinders and formed them around a glass bowl to create a curved shape.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-010403.jpg?width=700&quality=10)
6. Since I had a lot of left over fondant, I made little balls in each colour, to use as a border.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-010440.jpg?width=700&quality=10)
7. Once the cake is finished, move it onto the larger cake board, securing in place with a dab of buttercream.
I added the rainbow to the side of the cake, then used the balls of fondant to form a border.
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-011113.jpg?width=700&quality=10)
![rainbow cake](https://static.cdntap.com/tap-assets-prod/wp-content/uploads/sites/12/2014/03/20140226-011238.jpg?width=700&quality=10)
The pièce de résistance was the little Rainbow Dash topper on the cake!
Have a wonderful rainbow filled day!
For more recipes from Radhika, check out her blog at https://sinsationscakes.wordpress.com or like her on Facebook.