Amaretti are very crisp macaroon-type cookies. They typically come in a box and are wrapped in pairs. If amaretti are not available, biscotti can be substituted.
Let guests have fun building their own sundaes. Arrange small bowls of sauce, crushed amaretti and chopped or shaved dark chocolate on a decorative tray.
Scoop the sorbets into dessert dishes ahead of time and freeze them until serving time.