This recipe is great for 3D Sculpture Cakes
Rice Krispie treats are an easy fun way to add amazing otherwise impossible detail to 3D and sculpted cakes. they are very useful alternative to cake where strength and stability is needed. I have included examples of how I have used RKT in some of my cakes as well as a recipe and instructions for making it.
Melt the butter and marshmallows in a pan on a medium heat stirring constantly to avoid burning on the bottom of the pan, when all of the marshmallows have melted pour onto the rice Krispies which should be in a bowl large enough to be able to mix together.
Stir with a wooden spoon until all of the rice Krispies are covered. If you intend to shape the RKT into a particular shape ie. a head you will need to do this once the RKT has cooled enough to handle (but not cooled completely.
Turn the RKT onto a work surface which has been cover generously with icing sugar, When the mixture is cool enough to handle grease your hands with some vegetable fat (flora white) and begin to model the required shape. If you need the structure to be very strong you can crush some of the rice Krispies before you mix in the melted marshmallows/butter, this will make the consistency denser.
Alternatively if you require the RKT to form a regular shape for example a cube or sphere you can press the mixture into a tin/bowl and allow to cool. Once the RKT has set you can easily carve into it with a small serrated knife.