I need to do some writing on a cake where the words do not harden or crust (they will be smushed by the child as part of the birthday celebrations), do any of you know of a recipe? The one I make always crusts. Any help much appreciated.

use a meringue based icing like swiss or italian or use piping gel maybe

Would piping gel be thick enough to write letters with? should I add some bc to it? I've read that marshmallow bc doesn't crust easily, do you have any knowledge of it? 

I'm hesitant to do smbc bc it's touch and go if it works for me

piping gel will work fine that's why i suggested it--no it's good to go as is--you don't need to add anything

i'm not sure about marshmallow buttercream--i would think that it would crust a bit but not in the way bc does--in other words--a meringue based icing you can rework it and re-ice an area and no problems it will all blend in--a marshmallow icing while it doesn't have a crispy crust like a bc--you could not re-work it without it looking bad--

i mean you can write with a crusting buttercream too--it will be fine with a crusting buttercream--no worries

Thanks K8memphis, I'm going to try it out. 

Thanks  K8memphis, it worked perfectly.

you are very welcome claire 138 

♥

AYou can just take a regular crusting recipe and add water until it's thin enough to pipe.