I think we can all agree that the rainbow trend reached peak unicorn when Starbucks made a drink based on the popularity of multi-hued foods, but you try explaining this to my 5-year-old.
Looking for a rainy-day baking project, I had a lightbulb recipe moment: We could make a rainbow cake without turning on the oven and using just four ingredients with a classic back-of-the box recipe. And so on this rainy day, a rainbow icebox cake was born.
All the flavors you know and love from icebox cake — soft, chocolatey wafers and cool, lightly sweetened whipped cream — are made more magical with a little food coloring and sprinkles. Here’s how to be a rainbow cake hero using just four ingredients.
Jonathan Wilhoite Blog 