AI need to make a running track to go around the outside of a 3 tier wedding cake. I have tried using marshmallow krispies, but I can't get it to set firm enough to hold it's shape.

When I use RKT to bake stuff, I REALLY, REALLY squish them together....actually crushing them.

And I don't use the full amount of butter.  Just a TBS or so.

One time I made them, I think I put them in the food processor before mixing with marshmallows....SADLY I can't remember if I actually did or just thought about doing it.  LOL.  Pretty sure I did it though.  You could make half a recipe to try it out.

Bake stuff??  I mean, make stuff!

AThanks, I'll try that later. Wondered if less mallows would be better?