A traybake of Brill with tomatoes, borlotti beans and white wine
This is a glorious traybake amended from Gordon Ramsay. He uses Halibut (or other similar meaty white fish, such as Cod). I've used Brill and would also use any similar flat fish (such as John Dory, Turbot, Dover Sole). This is impossibly quick and easy to do -dinner is on the table in under 30 mins from the start of preparation. It's also absolutely delicious and sanctimoniously healthy.