Join my online French cooking classes : https://learn.thefrenchcookingacademy.com/p/get-started-with-french-cooking If you like Mussels and Mushroom , you will love that casserole recipe. The Moules au gratin (as it is called in France) is a great recipe for any occasions. This delicious recipe is composed of Mussels pre cooked in the Mariniere style which are then mixed with a duxelle of Mushrooms and a creamy shellfish veloute. The Mussel bake can be topped with cheese or bread crumbs before it is broiled for a few minutes in the oven.Ingredients:For the mussels: 1 kg of mussels 20 grams of shalllots 100 ml white wine 100 ml of shellfish stock 10 grams of chopped parsleyFor the Duxelle of Mushrooms: 150 grams of Button mushrooms finely chopped (use food processor) 10 grams of unsalted butter 10 grams of finely chopped shallots 25 ml of white wine 1 generous tablespoon of chopped parsley Salt 1 pinch A squeeze of lemon juiceFor the mussel veloute: 10 grams of butter 20 grams of shallot 50 ml of white wine 200 ml of mussel cooking juices 200 ml of shellfish stock (or crab stock) 100 ml of heavy cream / full cream 45%fat content min. 20 grams of beurre manie ( 10 gram butter / 10 grams plain flour) Up to 150 grams of Duxelle of mushrooms All the unshelled mussels cooked previouslyFull printable recipe here:http://www.thefrenchcookingacademy.com/recipe/mussel-pie/