Now, it's time for the rainbow frosting! You will make this from ... Frost the top of the cupcakes and sprinkle the remaining ...

Use a bench scraper to smooth the sides of the cake and remove any stray frosting from the cake board. Top with rainbow sprinkles, as desired. 4. Refrigerate the cake until ready to serve.

When you make a cake (like this rainbow cake), cupcakes ... layers of cake scraps and frosting in a small jar or glass, top it all off with whipped cream, chocolate sprinkles, and syrup, and ...