Clean and dry the piece of fish. Wash, dry, and cut the apple into quarters (remove the seed nest). Cut each quarter into slices.

In a small ovenproof dish, arrange a layer of apple slices.

Then place the fish.

Spread another layer of apple slices. Drizzle with olive oil and season with salt, pepper, and thyme. Cover with a lid or aluminum foil and place in an oven preheated to 180°C (356°F). Bake for about 25-30 minutes. After the indicated time, remove the cover and bake until browned, for another 20-25 minutes.

Serve on a plate.