Fish pie recipes

[condor]

I bought some fish pie mix (cod, smoked haddock and salmon) and intend to use a parsley sauce packet mix to make the sauce for it. I'll use the milk I've poached the fish in. I see some recipes include hard boiled eggs ( why?) and frozen peas. Cheesy mash topping or basic creamed mash I'll decide on later.
This will be for Friday - does anyone have a better way to cook a fish pie?

[condor]

Thanks for your suggestions so far
I'm still thinking of going with my original plan I like easy and tasty No eggs, as no real reason has been mentioned.