Mussels with beurre d'escargot (Slideshow version)
Stage 6/6 : 5 min.
Cook in the oven for 5 or 6 minutes at the most. Above all, do not let the butter brown.Serve piping hot.
Remarks
If you don't have any paper cases, you can use half a mussel shell instead, but this is less practical as the capacity is generally a bit small.Another more elegant solution, though rather more complicated, is to make little cases out of puff or flaky pastry (pâte feuilletée).