Ready to make easy rainbow cupcakes?! I am obsessed with learning how to make rainbow frosting, and this easy Froot Loops cupcake recipe idea will show you how! Let's get baking. To get started ...

They’re really fun to make. You will need four snaplock bags (maybe a few more just in case of mistakes) for this recipe.

What’s the secret to a good rainbow? “Slightly undercooking them so they stay moist,” says Carbone. “That, and Smucker’s preserves.” ...