There have been a few threads recently, but it's quicker for me to recap what I remember and my experience.
Some suggest leaving the butter out of the recipe, use the marshmallows instead of the fluff.
And pack them tight if you need to hold a shape of any kind.
When I use rice krispie trets to model with, I make the recipe on the box and add a few extra rice krispies. I let them harden in the pan some and then I mold my figure or whatever. I then let that harden pretty well. RK treats are sort of forgiving and the heat from your hands helps you to mold shapes from them. I just finished making a chimney for a log cabin, and now I am getting ready to make a present box lid.
I use about half of the butter amount and crush the rice crispies. Seems to model and smooth better that way. You can see on my peacock cake how I used the rc's to form the neck and head. I shape stuff when it's cooled enough to not burn my hands and press the shapes as firmly as I can. Hope this helps.
Amy
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