The rainbow cake is a vibrant and eye-catching dessert that kids absolutely love. It's made by layering different colored cake batters to create a beautiful rainbow effect when sliced. Each layer is usually flavored with a different extract, such as strawberry, lemon, or orange, to add variety to the cake. The layers are then frosted with a smooth buttercream frosting and decorated with rainbow-colored sprinkles. It's a fun and delicious cake that brings joy to any birthday celebration.