Baked Mackerel with Lemon and Herbs

Why This Works for Intermittent Fasting

Mackerel is one of the most nutritionally dense fish you can eat — packed with omega-3 fatty acids, vitamin D, vitamin B12, and high-quality protein. When you break a fast, your body is primed to absorb nutrients efficiently, and mackerel delivers a potent anti-inflammatory hit alongside the protein your muscles need for repair. The fat content supports sustained satiety, keeping you full through to the next fasting window without triggering cravings.

Ingredients

• 2 whole mackerel, butterflied and cleaned (or 4 fillets, skin on)
• 3 tablespoons olive oil
• 1 lemon, thinly sliced, plus extra wedges for serving
• 4 cloves garlic, finely sliced
• 1 small bunch fresh flat-leaf parsley, roughly chopped
• 1 small bunch fresh thyme (or 1 teaspoon dried thyme)
• 1 teaspoon dried oregano
• Sea salt and black pepper to taste
• 1 teaspoon smoked paprika (optional)

Instructions

1. Preheat the oven to 200°C (400°F) fan. Line a large baking dish or roasting tin with baking parchment or lightly grease with olive oil.

2. Pat the mackerel fillets dry with kitchen paper. Place skin-side down in the baking dish, spaced slightly apart.

3. In a small bowl, mix the olive oil, garlic, half the parsley, thyme, oregano, smoked paprika (if using), a generous pinch of sea salt, and several grinds of black pepper.

4. Spoon the herb oil generously over each fillet, spreading it evenly with the back of the spoon.

5. Lay the lemon slices over and around the fish, pressing a couple directly onto each fillet.

6. Bake for 18–22 minutes, until the flesh flakes easily when pressed gently with a fork and the skin is beginning to crisp at the edges.

7. Remove from the oven and scatter over the remaining fresh parsley. Serve immediately with lemon wedges.

Nutrition Per Serving

Fasting Compatibility

Mackerel's high fat and protein content makes it ideal for any eating window — 16:8, 18:6, or OMAD. The low carbohydrate profile keeps insulin minimal, supporting a smooth transition back into fasting after your meal. Its rich omega-3 content also directly supports the anti-inflammatory benefits that fasting amplifies.

Related Recipes

• Baked salmon with dill, lemon, and capers
• Pan-fried trout with almonds and capers
• Grilled sea bass with fennel and olives

This recipe is for informational purposes only and is not medical advice. Always consult a qualified healthcare professional before making dietary changes, especially if you have an existing health condition.