Squash lime, oyster sauce, salt and pepper on both side fillet fish. Leave it for 10 minutes

Chop onion, garlic, bellpaper, carrot and brocolli into fine pieces.

Rub chopped garlic to both side fillet and leave it again for 1 minute

In baking pan, add onion and on top of that, fish fillet (make sure the fillet didn't touch the pan)

Add bellpaper, brocolli and carrot on top.

Oven at 180 C for 20 - 30 minute (depend on the fillet thickness)

And you're done :)