Baked Mackerel with Dill and Lemon
Mackerel fillets baked with fresh dill and lemon for a rich, omega-3-packed meal that supports skin health without added sugars. This Scandinavian-inspired Whole30 recipe, ready in about 24 minutes, pairs mackerel fillets, fresh dill, lemon for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 290 calories and feeds 4, so it slots cleanly into a Whole30 week and pairs well with roasted sweet potato or a simple olive-oil salad. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 4 (5 oz each) mackerel fillets
- 2 tbsp chopped fresh dill
- 1 (zest of 1/2, juice of 1/2) lemon
- 1 tbsp olive oil
- 1 clove minced garlic
- 1/4 tsp sea salt
- 1/8 tsp black pepper
The sheet pan we’d roast this on → Best Sheet Pans in 2026: Top Picks + Buying Guide
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Equipment for this recipe
Tools this recipe's steps call for, with a link to each on Amazon.
Instructions
- Step 1: Preheat oven to 425°F. Place mackerel fillets skin-side down on a greased baking sheet.
- Step 2: In a small bowl, mix 1 tbsp olive oil, 1 minced garlic clove, 1/2 lemon zest, 1/2 lemon juice, 2 tbsp chopped dill, sea salt, and black pepper.
- Step 3: Brush mixture evenly over mackerel. Bake 12-15 minutes until fish is opaque throughout and flakes easily at the thickest part.









