Cook's Notes
Yield
Makes 18 to 20 pieces
The only thing that is slightly challenging here is covering the filled mussels with white sauce. Be sure to use plenty of sauce and seal the edges well with your spoon. This is a messy job. Work slowly and don't get frustrated.
Ingredient Notes
Thinly sliced deli ham can be substituted for the proscuitto.
Advance Prep
The mussels can be prepared and covered with the white sauce up to 1 day ahead of time. Once the white sauce has hardened, cover and refrigerate.
Variations
Clams can stand in for the mussels.