Marshmallow Sugar Scrub

At Easter time this year, I happened to purchase a Wilton silicone mold that had the shapes of bunny and chicks.  I know that it was meant for candy but I really wanted to make soaps or maybe bath fizzies.  While cruising the Wholesale Supplies Plus website for new recipes I found this recipe for Marshmallow Sugar Scrub.  According to the recipe you are supposed to put the mixture in a piping bag and pipe it out onto a cookie sheet.  I am wondering if it too thick to pipe it into my molds. May have to give this a try and give them out at Easter.