Although it might seem difficult, this fun and colorful cake is beginner-friendly because you don't need to bake it! This literal Elsa Frozen Cake is made of ice cream, so you can prepare it the night before decorating. All you need is just some vanilla ice cream (or any other ice cream of your preference), some mini marshmallows, buttercream, and of course, an Elsa doll. The marshmallows are mixed in with the ice cream to give more texture. Then the dress is made with piped buttercream. Mix up the colorings between blue and white, and you'll get an amazing colorful dress. This Elsa frozen birthday cake will surely satisfy your little fan.