I have used a doll cake pan for this cake. While I am a person who does not like to buy a pan for one cake. I do think that a doll cake pan, ball cake pans are two that are a must for any cake decorator. There is so much you can do with these pans. Having said that if you are making this just one off. Don't go buying a doll pan. Look in your cupboard, and I'm sure you will find an oven-safe glass bowl or pudding basin that's deep and tall. Grease and line it with parchment paper before you bake. You may need to taper it a bit the top by carving but that's easy no matter how new you are to cakes.