To make this Libby's Pumpkin Roll Recipe gluten free, replace the flour with a 1:1 gluten-free baking flour blend that contains xanthan gum. Verify that the baking powder, baking soda, pumpkin pie spice, cinnamon, nutmeg, pumpkin puree, marshmallow fluff, powdered sugar, cream cheese, butter, and vanilla are labeled gluten free. Use a clean towel, utensils, pan, and prep surface to prevent cross-contact. Chill the roll well before slicing, as gluten-free cakes may be slightly more delicate.