The skinless, boneless fillets of sea bass that are widely available from supermarkets are ideal for this – they’re ready to go, and so quick to cook.
4 x 100g sea bass fillets
olive oil, for brushing
FOR THE CAPER DRESSING
3 tbsp extra virgin olive oil
grated zest 1 lemon, plus 2 tbsp juice
2 tbsp small capers
2 tsp gluten-free Dijon mustard
2 tbsp chopped flat-leaf parsley, plus a few extra leaves (optional)
To make the dressing, mix the oil with the lemon zest and juice, capers, mustard, some seasoning and 1 tbsp water. Don’t add the parsley yet (unless serving straight away) as the acid in the lemon will fade the colour if they are left together for too long.
Heat oven to 220C/200C fan/gas 7. Line a baking tray with baking parchment and put the fish, skin-side up, on top. Brush the skin with oil and sprinkle with some flaky salt. Bake for 7 mins or until the flesh flakes when tested with a knife. Arrange the fish on warm serving plates, spoon over the dressing and scatter with extra parsley leaves, if you like.