Creamy Cod and Potato Gratin
Use cod fillets that are 6 to 8 ounces each.
You can add as much potato as you want to the casserole dishes but remember to leave room for the fish and sauce.
This recipe will make extra mashed potatoes; 1 large russet potato will be enough for 2 portions. Recipe can be tripled and baked in a 9x13-inch casserole dish.
Substitute dill for tarragon if desired.