Artificial Flavors Free Cilantro-Lime Mackerel with Fennel & New Potatoes Sheet Pan Dinner
Sheet pan dinners are a weeknight lifesaver, and this one delivers serious flavor without a single synthetic shortcut. Every element of the marinade — fresh cilantro, real lime juice and zest, minced garlic, ground cumin, and turmeric — is exactly what it sounds like, no artificial flavor enhancers hiding anywhere on the ingredient list. Mackerel is an underrated fish that holds up beautifully to bold seasoning, and the citrus-herb marinade soaks into the flesh side of each fillet while the potatoes and fennel get a head start in the oven. Those new potatoes roast cut-side down until golden at the edges, and the fennel wedges turn silky and slightly caramelized — a combination that makes the whole pan smell incredible. Sliding the marinated fillets onto the same pan for the final stretch means everything finishes together and cleanup stays minimal. A squeeze of fresh lime over the top right before serving ties all those warm spice notes back to the bright, citrusy marinade. It's the kind of meal that tastes like it took far more effort than one pan and about thirty minutes of active work.
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Learn more →Ingredients
4 servings
For the sheet pan
- 1 ½ lb new potatoes, halved
- 1 large fennel bulb, cored and cut into ¾-inch wedges, fronds reserved
- 3 tbsp extra-virgin olive oil, divided
- ¾ tsp fine sea salt, divided
- ½ tsp black pepper, divided
For the marinade
- ¼ cup fresh cilantro leaves and tender stems, finely chopped
- 2 tbsp fresh lime juice (from about 2 limes)
- 1 tsp lime zest
- 2 garlic cloves, finely minced
- 1 tsp ground cumin
- ½ tsp ground turmeric
- ¼ tsp red pepper flakes
For the fish
- 4 mackerel fillets (about 5–6 oz each), skin-on, pin bones removed
For serving
- lime wedges, for serving
- reserved fennel fronds, roughly chopped, for serving (optional)
Instructions
- 1
Position a rack in the center of the oven and preheat to 425°F (220°C). Line an 18×13-inch rimmed sheet pan with parchment paper or foil.
- 2
Toss the halved new potatoes and fennel wedges on the prepared sheet pan with 2 tablespoons of the olive oil, 1/2 teaspoon of the salt, and 1/4 teaspoon of the black pepper until evenly coated. Spread in a single layer, cut sides down. Roast for 20 minutes, until the potatoes are just beginning to turn golden at the edges and the fennel is softened.
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