Hi Kel
Captain Bullshits do a great seafood casserole but you'd have to ask specially for it as it usually forms part of the seafood platter for 2
If your OH would like mussels in it, you'd have to order it the day before as they get the mussels in as they are needed
It's one of my favourite meals
They also do a prawn casserole which is nice, but not a patch on the seafood one IMHO