One of my favorite fish is Cod. I drizzle filets with a little EVOO, pepper or blackening seasoning and bake in the oven at 350 for about 20-30 minutes depending on the size of the filet.
I served this the other night over a bed of sautéed Brussel sprouts with bits of pre-cooked bacon tossed in with crushed grape tomatoes on the bottom layer.
Super fast, fresh and healthy.

Pro-tip: Half the Brussel sprouts and sauté in EVOO for about 15 minutes until softened, but so they still have a bit of crunch. When cooked, toss in the bits of pre-cooked bacon for added flavor. No need to salt if you use the bacon.