Shells stuffed with tuna and mussels

Sonia has once again taken part in our recipe competition. And her entry is the ideal recipe for surprising your guests. Because stuffed and grilled scallop shells are always a hit: with scallops, hake, prawns… We can create any seafood filling we want, but we’re going to stick with Sonia’s suggestion: yellowfin tuna and mussels in brine. Give them a try and you’ll see 😉


  • Tuna in olive oil
  • Mussels in brine
  • 1 onion
  • Fish stock
  • Milk
  • 3 tablespoons of flour
  • 3 tablespoons of butter
  • Nutmeg
  • Salt and pepper
  • Grated cheese
  • Scallop shells for stuffing


  1. Heat the butter and flour in a frying pan. Stir and leave to cook a while, making sure that the ingredients don’t burn.
  2. Add a small glass of milk and another of fish stock, and stir well to avoid any lumps.  Leave to cook for 5-6 minutes until you get a thick béchamel sauce (if it’s too thick, add a little more stock and milk).
  3. Add the salt, pepper and nutmeg.
  4. Toss in the chopped mussels and drained tuna.
  5. Fill the shells with the resulting mixture.
  6. Sprinkle the grated cheese over the stuffed shells.
  7. Pop them under the grill for a few minutes until they are golden.

Absolutely delicious! Thank you Sonia!

Share this recipe!