How to Bake the Coolest Rainbow Tie Dye Surprise Cake

Whether you’re aiming to make this fun-looking treat for a child or an adult, anyone is sure to be excited to cut into this surprise cake. At first, when we watched Ann Reardon of How to Cook That demonstrate how to make the hidden tie dye rainbow heart, we were sure this cake was going to come out looking like a mess. But this process ended up creating a truly gorgeous cake that we’d love to get our hands on. Here’s how it’s done: