Crispy Skillet Arctic Char with Garlic Herb Butter Step-by-step instructions

Before you start

Before you start, take the Arctic Char out of the refrigerator and let it sit at room temperature for 10-15 minutes (no more than 30 minutes). Pat the fillets completely dry with paper towels.

Chop the dill, mince the garlic, and grate the Parmigiano Reggiano. Cut the cold butter into small cubes and measure out the cherry tomatoes. Have all your ingredients and equipment ready, as the cooking process moves quickly.

Instructions

Prep and Sear

1. 1Prep the Fish and Aromatics
   Pat the Arctic Char fillets dry with paper towels. Using a sharp knife, score the skin in a crosshatch pattern, being careful not to cut into the flesh. Season both sides generously with kosher salt and freshly ground black pepper. Chop the fresh dill and mince the garlic. Grate the Parmigiano Reggiano on the fine holes of a box grater to create a fluffy pile of Parmesan snow.
   Look for The skin is scored with shallow cuts; the Parmesan is finely grated and airy.
   Tip Scoring helps the skin crisp evenly and prevents it from curling during searing.
2. 2Heat the Skillet
   Place a cast iron skillet over medium-high heat and add the neutral oil. Heat until the oil shimmers and is almost smoking – about 2-3 minutes. The pan must be very hot to achieve a shatteringly crisp skin.
   Look for The oil shimmers and ripples across the pan surface.
   Tip A properly preheated skillet ensures the skin sears immediately without sticking.

The fish is seasoned and scored, the aromatics are prepped, and the skillet is ripping hot. The fillets are searing skin-side down, and you can hear a gentle sizzle.

The skin should be turning golden brown and releasing from the pan easily. The kitchen smells of toasting butter and garlic.

Butter Basting

3. 3Sear the Arctic Char Skin-Side Down
   Carefully lay the Arctic Char fillets skin-side down in the hot skillet. Press gently with a fish spatula for a few seconds to ensure even contact. Cook without moving for 4-5 minutes, until the skin is deeply golden and crispy.
   Look for The skin turns deep golden brown and releases easily from the pan.
   Safe temperature 145°F (63°C) internal temperature (fish)
   Tip Resist the urge to move the fillets; let the skin develop a crust.
4. 4Add Tomatoes and Butter
   Add the cherry tomatoes to the skillet around the fish. Add the cold butter cubes, minced garlic, and half of the chopped dill. As the butter melts, tilt the pan slightly and use a large spoon to baste the fish and tomatoes with the foaming butter.
   Look for The butter foams and turns nutty; tomatoes begin to blister.
   Tip Cold butter creates a more emulsified sauce; baste continuously for flavor.
5. 5Finish Cooking and Baste
   Continue basting for 2-3 minutes, spooning the garlic-herb butter over the fish. The tomatoes should blister and soften. Cook until the fish is opaque and flakes easily with a fork, and the internal temperature reaches 145°F (63°C).
   Look for The fish is opaque and flakes; the tomatoes are blistered and glossy.
   Safe temperature 145°F (63°C) internal temperature (fish)
   Tip Use an instant-read thermometer to check the thickest part of the fillet.

The butter is foaming and nutty, with garlic and dill fragrant in the pan. The tomatoes are blistered and glossy, and the fish is nearly cooked through. The sauce is bubbling and coating the fish beautifully. The fish flakes easily and the internal temperature is close to 145°F (63°C).

Finish and Serve

6. 6Rest and Serve
   Remove the skillet from the heat. Let the fish rest for 2-3 minutes on a plate or in the skillet off the heat. Spoon the blistered tomato-garlic butter over the fish, then sprinkle with the remaining fresh dill and the grated Parmigiano Reggiano. Serve immediately.
   Look for The butter sauce is glossy; the Parmesan melts slightly over the hot fish.
   Safe temperature 145°F (63°C) internal temperature (fish)
   Tip Resting allows the juices to redistribute; serve with the pan sauce spooned over.

The fish has rested briefly and is moist and tender. The sauce is spooned over the top, and the Parmesan is melting into the butter. The fresh dill adds a pop of color and freshness. The dish is ready to serve immediately, with the crisp skin still shattering.

Common mistakes

One of the most common mistakes is not heating the skillet enough – if the pan isn't screaming hot, the skin will stick and not crisp. Another mistake is moving the fish too early; let it cook undisturbed for at least 4-5 minutes.

Also, avoid overcrowding the pan – if cooking more than two fillets, do it in batches. Finally, don't skip the scoring – it's essential for even crisping and prevents curling.

How to tell it’s done

The Arctic Char is done when the skin is deeply golden and crispy, and the flesh is opaque and flakes easily with a fork. The internal temperature should reach 145°F (63°C) in the thickest part of the fillet.

The cherry tomatoes should be blistered and slightly softened, and the butter sauce should be bubbling and aromatic. The fish should be moist and tender, not dry.

• Fish: 145°F (63°C) in the thickest part