Do not panic! Solving is very simple :)
It rarely happens, and in 90% of cases the problem is the EGG. The egg makes the rice too "sticky". If you have used it, please avoid it and try again! If you have not used the egg, the problem could be the type of rice (we recommend rice for arancini) or the consistency of the dough. The latter must be dried and cooled.
Butter is an excellent ingredient. It helps to release the arancino from the mold.
If you do not solve the problem contact us.