White fish fillets cooked with mustard, butter and lemon juice.

Ingredients
1 kg fish fillets, 2 T Butter, cut into bits, Lemon juice, 1 tbsp dry mustard, ½ cup flour, ¾ cup , breadcrumbs, 2 tbsp Butter, 1 cup milk, Salt, Pepper and Parsley

Directions
Clean and cut the fish in medium sized portions. Sprinkle salt, pepper and lemon juice on it. Keep it aside. Take a large pan. Melt two tablespoons butter in it. To this add flour, stirring continuously and cooking over a low heat for some time. Now add milk stirring continuously and simmering till sauce is this. Add mustard salt and pepper and cook for some more time. Now layer fish in casserole with bits of butter and the sauce. Top with breadcrumbs and chopped parsley. Bake in a preheated oven at 350 degrees for 25 minutes. Casserole is ready.