Hi Loula, your idea is genial!
Now it's really not Easter. I saw this recipe between many others without photo and I found it a great idea.
Having only Christmas molds, I had to find a solution. For those I cut rings of plastic bottles and shaped to eggs with some adhesive tape.
I placed the greased mold on a silicon mat, placed some colorful "smarties" on the bottom, added 1 tablespoon of the crispies mix, two ribbon strips, some crispies mix and finally more smarties. I made 6 big pieces.
After about two hours they were ready to hand on the Eater three!
I allowed my children to try them, they will sure not last until next Easter! Too good!