I made this Teenage Mutant Ninja Turtle Birthday Cake for my son in 2011. I used the Wilton Ninja Turtle cake pan, covered it first with a layer of marshmallow fondant icing colored with a hint of brown. I then traced the figure in brown butter cream icing with strawberry flavor, and filled the details of the character in using the same icing, with a small star tip. I used my mom’s home-made butter cream icing recipe, which is really rather simple: a package of powdered sugar, about 1 cup of shortening, 1 tsp vanilla and some milk, then blended with an electric mixer, adding milk or powdered sugar until it is the desired consistency. I hardly ever measure. It is important for the star tube that the icing not be too runny, but that it has a good quantity of shortening and powdered sugar to keep the form of the stars and so they don’t flatted in the heat. I used paste colors added to the white icing to make the different colors, since I get the best results for consistent color and no bleeding.