Preheat your oven to grill function and hot air at 230 degrees.
Wash the mussels thoroughly in plenty of water.
Let the lump melt butter in a pot, simmer the look, onion and thyme. Deglace with dry white wine.
Add the mussels, put lid on it.
Let it cook for 3-4 minutes on hard heat until they just open, remove the mussels from the pot and let cool.
Once cooled, remove the mussels from the shells. Place ½ shell on an oven dish each time and put the mussel in again. Choose the largest and most beautiful shells.
Let the mussel wine juice boil to the quantity of approximately 3 tbsp.
Mix all the ingredients for the butter and sieve the mussel wine juice on the butter. Mix everything well together. Spread the butter over the shells with mussels.
Put them under the grill for 5 to 10 minutes until they are nicely gratinated brown and smell heavenly. 🙂
Pieces of bread when serving is a must!