Have the 6 Mackerel fillet on a baking dish with a parchment paper, skin face down.
Turn your oven on at 400ºC (205ºF), salt and pepper the fish, drizzle olive oil. When oven is hot, turn the grill or broiler on high, then put the fish tray close to the top in the oven for 4 to 6 minutes. Remove and serve right away.
Can be served on top of our famous Fennel and orange salad, or roasted asparagus...