Tree Nut Free Herb-Baked Mackerel with Lemon and Olive Oil
Mackerel is one of those underrated weeknight heroes — rich, meaty, and packed with flavor that holds up beautifully to bold seasoning. A quick rub of turmeric, smoked paprika, salt, and pepper gives each fillet a warm, aromatic crust before it ever hits the oven. Thin lemon rounds and sliced garlic roast right alongside the fish, softening and caramelizing into something almost jammy and deeply savory. A hot 425°F oven does the heavy lifting in under twenty minutes, leaving the flesh opaque, flaky, and perfectly cooked through. The finishing move — a generous scatter of fresh parsley, dill, and thyme straight out of the oven — keeps everything bright and herbaceous against all that richness. Every ingredient here is straightforward and naturally free from tree nuts, so there's no label-scanning or substitution stress involved. Serve it with extra lemon wedges and you've got a restaurant-worthy plate that came together with almost no effort at all.
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Learn more →Ingredients
4 servings
- 4 mackerel fillets (about 6 oz each), skin-on
- 3 tbsp extra-virgin olive oil, divided
- 3 cloves garlic, thinly sliced
- 1 tsp ground turmeric
- ½ tsp ground black pepper
- ¾ tsp fine sea salt
- ½ tsp smoked paprika
- 1 lemon, thinly sliced into rounds
- ¼ cup fresh flat-leaf parsley, roughly chopped
- 2 tbsp fresh dill, roughly chopped
- 1 tbsp fresh thyme leaves
For serving
- lemon wedges, for serving (optional)
Instructions
- 1
Preheat the oven to 425°F (220°C). Line a rimmed baking sheet with parchment paper and drizzle 1 tbsp of the olive oil evenly over the surface.
- 2
In a small bowl, stir together the turmeric, smoked paprika, black pepper, and salt. Pat the mackerel fillets dry with paper towels, then rub both sides of each fillet with the spice mixture.
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