Ingredients
Method
- Flake fish (and cook if not already cooked).
- Make white sauce with butter, flour, salt, pepper and milk. Stir until thickened. Add onion and dry mustard.
- Arrange fish in bottom of dish or in individual servings.
- Cover fish with cream sauce and top with grated cheese.
- Place casserole(s) in shallow pan of water and bake at 350 degrees F for 30 minutes.
