“This recipe is incredibly versatile – use whichever fish you like (as long as it's sustainable) and add any herbs to the crumb. A fine grating of Parmesan makes a nice addition, too. It doesn’t matter if your bread is a bit stale, it’ll still work fine. And if you haven’t got any bread you can use four smashed-up cream crackers instead. ”
Tear the bread into a food processor, add 2 tablespoons of oil and grate in the zest of half a lemon. Pick in the thyme leaves (throw away the stalks), then add a grinding of black pepper. Whiz the mixture until nice and fine.
Place a non-stick ovenproof frying pan on a medium-high heat. While it’s heating up, check that there aren’t any stray bones lurking in the fish fillets, then rub them all over with a little oil.
Place the fish in the hot pan skin-side down. Squeeze some lemon juice over the top of each fillet, then pile most of the crumb on top, covering them evenly, then scatter the remaining crumb into the pan.
Fry for 3 minutes (this will get the skin nice and crispy), then transfer the pan to the oven and roast for 8 to 10 minutes, or until the fish is cooked through and the crumb is golden and crunchy.
Carefully remove the pan from the oven using oven gloves, then transfer the fish to your plates using a fish slice.
Serve scattered with the extra super-crispy crumbs, and a jacket potato or wedges, and broccoli or peas on the side.