Red Meat Allergy Friendly 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 trace of red meat anywhere on the pan. Mackerel is the real star here — a rich, meaty fish that holds up beautifully to a bold marinade of fresh cilantro, lime juice, cumin, and turmeric, giving every bite a bright, aromatic punch. The skin-on fillets roast right alongside caramelized new potatoes and tender fennel wedges, so you get a complete, satisfying meal with minimal cleanup. What makes this combination so smart is the way the anise-sweet fennel and the zesty lime marinade balance the natural depth of the mackerel — nothing feels heavy, just layered and really well thought out. For anyone navigating a red meat allergy, fish-based sheet pan dinners like this one are a fantastic way to keep dinner exciting and completely stress-free, since every ingredient here is straightforward and easy to verify. Finish the plates with a squeeze of fresh lime and a scatter of those reserved fennel fronds, and it looks like something you'd order at a restaurant.
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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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