Recipes › Main Course › Baked Mackerel with Lemon Recipe

Baked Mackerel with Lemon Recipe High-Protein

Recipe by Pedro M. A. Neves

This Italian-inspired baked mackerel showcases the bright, clean flavors of the Mediterranean with fresh lemon and aromatic herbs. Rich in omega-3 fatty acids and lean protein, this dish delivers restaurant-quality results in under 30 minutes. A nutritious, high-protein main course that honors Italy's seafaring culinary tradition.

Ingredients

• 4 mackerel fillets (about 150g each, skin-on)
• 3 lemons
• 3 tablespoons extra virgin olive oil
• 4 cloves garlic, thinly sliced
• 2 teaspoons dried oregano
• 1 teaspoon dried thyme
• Sea salt to taste
• Black pepper to taste
• 2 tablespoons fresh parsley, chopped
• 200g (7 oz) green beans, trimmed
• 1 teaspoon capers, rinsed

Instructions

1. Preheat oven to 200°C (400°F). Line a large baking sheet with parchment paper.

2. Pat mackerel fillets dry with paper towels and arrange skin-side down on the prepared baking sheet, spacing them evenly.

3. Slice 2 lemons into thin rounds and cut the third lemon into wedges. Distribute lemon slices over and around the mackerel fillets.

4. Drizzle the mackerel with olive oil, then scatter sliced garlic, oregano, thyme, sea salt, and black pepper evenly over the fillets.

5. Toss green beans with 1 tablespoon olive oil, salt, and pepper in a separate bowl, then arrange around the mackerel on the baking sheet.

6. Bake for 16–18 minutes until the mackerel flesh is opaque and flakes easily when tested with a fork, and the green beans are tender-crisp.

7. Remove from oven and scatter fresh parsley and capers over the fish. Squeeze additional lemon juice from wedges over the plate just before serving.

8. Transfer to serving plates immediately while hot, ensuring each portion includes fish, vegetables, and pan juices.

Substitutions

• Replace mackerel with sea bass or branzino fillets for a milder flavor
• Substitute green beans with asparagus or zucchini slices
• Use fresh lemon juice (30ml) if whole lemons are unavailable; adjust baking time to 14 minutes
• Replace dried oregano and thyme with 1 tablespoon fresh mixed Italian herbs

Tips

• Ensure mackerel fillets are completely dry before seasoning to achieve better browning and prevent steaming
• Do not overcook; mackerel cooks quickly and becomes dry if left in the oven beyond 18 minutes
• For added richness, drizzle with a small amount of butter or anchovy oil in the final minute before serving
• Use a meat thermometer to verify doneness: fish should reach 63°C (145°F) at the thickest point

Baked mackerel with lemon reflects the Italian coastal tradition of preparing fresh seafood simply, letting quality ingredients shine. This preparation style is particularly common in Southern Italy and Sicily, where mackerel is abundant and Mediterranean herbs grow wild.

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