Slice the pepper and onions and cut the courgette and aubergine in to thin rounds.
Add a tablespoon of olive oil to a roasting tin or ovenproof dish, then add the vegetables and thyme. Toss the vegetables to coat them and season with plenty of salt and pepper.
Bake for 20-25 minutes or until the vegetables are tender.
Add the fish to the top of the tray and return to the oven for a further 8-10 minutes, or until the halibut flakes easily when tested with a fork.
Serve as is or with rice, pearl barley or quinoa. Garnish with fresh thyme.
Notes
Other suggested vegetables: Butternut squash, fennel, long stem broccoli, beetroot, asparagus, spring onions. Adjust cooking time accordingly for harder vegetables.
Recipe by A Life of Geekery at http://www.alifeofgeekery.co.uk/2017/07/mediterranean-baked-halibut.html