Yes, you can freeze struffoli, but it is not recommended to freeze the uncooked dough. Freeze the already-fried dough balls. Make the dough, form the balls, fry them, and let them cool for about 30 minutes. Place them into plastic freezer bags and freeze them for up to one month. When ready to serve, take them out of the freezer and defrost them at room temperature. Make the honey syrup and toss the defrosted struffoli in the syrup. Serve!