Mackerel Pizzaiola
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2 whole mackerel, 1 1/2 to 2 pounds each
3 garlic cloves, chopped
1 Tbsp chopped fresh parsley
pepper to taste
2 tsp chopped fresh oregano or 1/2 tsp dried
2 Tbsp chopped fresh basil or 1/2 tsp dried
1 (14 oz) can Italian peeled tomatoes, drained and chopped

Preheat oven to 350F. Slash mackerel diagonally, 3 times on each side, 3/4
to 1 inch deep. Place fish in an oiled 13" x 9" baking dish. Cover fish
with tomatoes, garlic, basil, parsley and pepper. Bake 35 minutes, or until
fish flakes when tested with a fork.  Serve with pan sauce.

From: 365 Easy Italian Recipes by Rick Marzullo O'Connell