Luxurious fish pie - any ideas please

I use a mix of chunks of uncooked smoked haddock and cooked prawns, popped in a dish with peas/broccoli/asparagus - depending on what I have in, [briefly steamed]. Warm up a tub of cheese sauce [from pasta section of most supermarkets ] with a smidgen of English mustard, a pinch of cayenne, some chopped parsley and juice of half a lemon. Stir this through the fish and I add a hard boiled egg for DH.
I find the topping of mash to be a bit heavy so I blitz some decent bread into crumbs with chopped spring onions and grated parmesan and pop this on top. Ciabatta flavoured with dried tomato or olives is good. The pie takes about 20 - 30 minutes @180. I find it's lighter than the traditional fish pie but still yummy.

Thanks RB I think you are right about not having potato topping as it would be a bit solid. I am going to have a trial run next week sometime - like your idea of using bought cheese sauce!

That sounds very tasty Rosie - will try it next time, thanks for that

grrrranny just in case your sauce doesn't taste 'fishy' enough the knorr fish stock cubes are great for adding flavour.