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Whole roasted mackerel

Prep Time10 mins
Cook Time20 mins
Course: Main Course
Keyword: AIP, egg-free, fish, gluten-free, grain-free, keto, mackerel, nut-free, omega-3, paleo, whole 30
Servings: 2


  • 1 whole Atlantic mackerel gutted and cleaned
  • 1 tsp extra virgin olive oil
  • 1 Tb avocado oil or other heat-stable oil
  • Sea salt
  • 1 lemon half sliced thinly, half reserved for finishing
  • 1 clove garlic thinly sliced
  • 3 sprigs oregano


  • Preheat oven to 450°F and put a rectangular glass baking dish in the oven to heat up.
  • Sprinkle olive oil and salt the cavity.
  • Stuff the cavity with aromatics (lemon, garlic and oregano).
  • Rub avocado oil on the outside of the fish and sprinkle salt all over.
  • Take out the baking dish and place the fish on it; it will sizzle. Your smoke alarm may go off. Be ready.
  • Bake 15 to 20 minutes, until the fish flakes and is easy to open up and fillet.
  • Fillet the fish, squeeze the remaining half a lemon on top, and serve. (There are plenty of good videos online for how to fillet a fish.)