I want to make a fish pie but don't have time of an evening so want to make it in advance but not sure what stage to take it to.
Not sure whether to poach the fish first or just mix it uncooked in with the sauce but presumably I would then have to cook it in the oven straight away.
I cut the fish into chunks and add it, uncooked, to the sauce and then add the topping. I tend always to place it straight in the oven, but I shouldn't think it would do any harm to place it in the fridge until you want to cook it.
I often make fish pies in advance and even freeze them. I poach the fish, add the sauce and veg. and pile the potato on top then it's ready to go into the oven later on. If I freeze it I let it defrost completely before carefully draining a bit of water from the bottom and then popping into the oven. By the way, my fish pies are generally white fish, smoked haddock and prawns or scallops.