Highway Unicorn Cake One bite of this unicorn swirl-inspired cake with layers of Swiss meringue buttercream will give you on an industrial-strength sugar high. Find a Recipes By Ingredients Share : You may like these posts :Classic Cream PuffsCookie Dough BallsBest Vegan Sloppy Joes (made in about 20 minutes)Creamy Vegan Polenta with Mushrooms and Spinach