MUSSELS 'AU GRATIN'

Ingredients:
Mussels - 4 pints
Onion - 1
Bay leaf - 1
Thyme
Parsley
Cooked mushrooms - few
Bechamel sauce 
Butter
Browned breadcrumbs
Grated cheese

Method:

• Open the mussels. Put them in a casserole or pan with their liquor and the onion, bay leaf, thyme and parsley.
• Cook them for about 5 minutes. Drain them, reserving the liquor.
• Put them in a fireproof dish.Slice the mushroom thinly, and cover the mussels with them.
• Make a thick bechamel sauce using half milk and half mussel liquor.
• Spread the sauce over the mussels.
• Dot with butter, and sprinkle with the browned crumbs, then with a little grated cheese.
• Brown and heat the dish briefly under the grill.