Garlic Herb Butter Pan-Seared Arctic Char with Blistered Tomatoes

Crispy skin, a glossy garlic herb butter and tomatoes that burst in the pan are all you need for a fish dinner that feels special. This one-skillet method gives you tender flesh, a golden crust and a sauce you will want to spoon over everything. It comes together in about thirty minutes, with only one pan to wash afterward.

Arctic char is a close cousin of salmon, with a delicate, buttery flesh and a thin skin that turns wonderfully crisp in a hot pan. This recipe pairs the fish with a simple garlic herb butter built on fresh dill and chives, then adds cherry tomatoes still on the vine so they soften and blister beside the fillets.

The finish is a generous shower of finely grated hard aged cheese, which adds a salty, savory note without overwhelming the fish. Everything is cooked in a single cast iron skillet, so the flavors build in the same pan. The result is a plated dinner with contrast in every bite: crackling skin, tender fish, sweet tomatoes and a sauce rich enough to mop up with bread.

Ingredients

Why this recipe works

The method starts the fish skin-side down in a hot pan. The fat renders slowly, the skin crisps and the flesh cooks gently from the bottom up, which keeps the fillets moist. Searing skin-side first also lets you see how far the heat has traveled before you flip, so you never have to guess when the fish is ready.

Basting is the other key. Spooning the foaming garlic herb butter over the fish and tomatoes continuously bathes the surface in fat and aromatics. This carries flavor into the flesh, helps the tomatoes soften and blister, and keeps the garlic from scorching because the butter constantly moves and cools the pan slightly.

The tomatoes go in during the sear and stay in the pan through the flip, which gives them time to burst and caramelize in the herbed butter. Their juices mingle with the garlic and dill to create a light, glossy sauce without any extra steps. Because everything shares one pan, the sauce is built directly from the fish drippings, which adds depth no separate bowl could provide.

Notes and substitutions

Arctic char is the star here, and skin-on fillets matter because the skin is the crispy element of the dish. Ask your fishmonger for fillets of similar thickness so they cook at the same pace. If arctic char is not available, salmon or trout are excellent alternatives with the same method. Choose firm, bright fish with no strong smell, and pat it dry thoroughly before scoring.

For the cheese, pick a hard aged variety such as Parmesan or aged Gouda, and grate it finely on a box grater so it melts slightly over the warm fish. Fresh dill and chives are worth buying fresh, since they carry the sauce's character. Use unsalted butter so you can control the seasoning yourself.

A 12-inch cast iron skillet is the ideal pan because it holds steady heat and gives the skin an even, deep crust. Use stainless steel tongs for flipping and a large spoon for basting. An instant-read thermometer helps you confirm the thickest part of the fish reaches a safe temperature without overcooking the delicate flesh.

The cutting board and sharp knife are used for scoring the skin and mincing the garlic, so keep the board dry and clean. If you cannot find cherry tomatoes on the vine, loose cherry tomatoes work just as well. A neutral oil with a high smoke point, such as canola or grapeseed, keeps the pan from burning before the butter foams.

• arctic char: salmon or trout fillets of similar thickness, skin-on
• hard aged cheese: aged Pecorino Romano or dry Jack, finely grated
• fresh dill: fresh parsley, with a pinch of dried dill stirred into the butter

Equipment

• 12-inch cast iron skillet
• Wooden cutting board
• Sharp knife
• Box grater
• Stainless steel tongs
• Large spoon
• Instant-read thermometer