I have a cake in the oven to take to my daughter who has just come home from having a baby. The icing (chocolate marshmallow creme) calls for Marshmallow Creme. I went to 3 supermarkets and could only find Fluff. Is it possible to make the same icing w/fluff. The other ingredients are: confect. sugar,cocoa powder, butter, milk. It says to heat the marshmallow creme, butter and milk until melted then add the dry ingredients.

Thanks