A Pastel Rainbow Cake is a fun cake for a birthday or party! This easy cake recipe has colorful pastel layers and is coated with a watercolor frosting and colorful sprinkles, perfect for a rainbow lover like ME:) Basically, this is a unicorn cake and a rainbow cake and my dream dessert all rolled into one nice package. How to play： - Add all the ingredients together to make the cake batter. - Divide the batter into four colors. All the colors are for you. - Make each layer one color. - Use the same cake pan for every layer. - Frosting with a crumb coat helps make your cake look pretty. - A watercolor frosting decoration is an easy and pretty way to frost a cake! - Decorate the cake with more toppings. Wow, look at the pretty rainbow pastel cake here. It looks so much like Swift Color. I’m pretty sure it will be the best party cake and the birthday cake. Let’s try it now.