My kids squealed with joy when they saw how beautiful this rainbow cake turned out. It was not difficult to make. Buy a box of white cake mix and some white frosting. Mix the cake batter together, and divide the batter equally into six bowls.
Using cake icing dye (that you can find at craft supply stores in the cake aisle), put a few drops into each bowl with the following colors: red, orange yellow, green, blue, and purple.
After mixing them well so that they look like bold colors, spoon three colors one by one on top of each other. Try not to mix the colors. If you want the cake to have straight colors, you could bake each color layer separately, but being a busy mother, I don’t have that kind of time. So I just put red, orange and yellow into one greased and floured round cake pan, and green, blue, and purple into the second pan.
After the cakes come out of the oven, cool them on a rack. Place them on top of each other, and put them in the fridge to make the cake easier to frost and cut smoothly. Mix green food coloring into the frosting, and frost the cake. Now you can enjoy your delicious rainbow cake.