
So simple & quick: fish in a buttery, crispy coating flavoured with Parmesan, lemon & garlic or your own favourite seasonings (see Recipe Notes for suggestions).
Preheat your oven to 220°C /200° Fan /Gas 7 /425° F with a shelf just above the middle.
Grease the bottom of a shallow baking dish with the knob of butter.
Season the fish lightly with salt and pepper (you may wish to omit the salt if using smoked fish) then put in the baking dish in a single layer.
In a bowl, mix together the breadcrumbs, Parmesan, garlic, lemon zest and some black pepper.
Put the butter and olive oil in a small saucepan over a low heat until the butter is melted, or microwave in a suitable bowl.
Stir the melted butter and olive oil through the breadcrumb mixture until well combined.
Press the breadcrumbs all over the tops of the fish. Scatter any remaining crumbs of the dish.
Bake in the oven until the fish is cooked all the way through and the crumb topping is crispy (10 - 15 min).
Check to see if the fish is done by inserting a knife into the thickest part and pushing apart a little and looking inside: the flesh should have turned from raw and translucent to opaque and flaky.
Serve straight away, with a sprinkle of chopped parsley and a squeeze of lemon if liked.
Chilling or freezing not recommended.
Other flavourings for the breadcrumbs you might like to try include: smoked paprika, cumin, curry spices, chilli flakes, dried herbs such as oregano or rosemary.