Lemon dill butter fish is a quick skillet meal inspired by the fresh herbs, citrus, and butter common in Scandinavian and North American coastal cooking. This modern preparation pairs mild white fish with a bright lemon-butter sauce and fresh dill; recipes vary, and it is not a single traditional dish from one country.
It comes together in about 23 minutes, including the time to prepare the ingredients, and works well with cod, haddock, or another firm white fish. The fish cooks gently in a hot skillet, then gets coated in a simple pan sauce that is easy to spoon over rice, potatoes, or vegetables.
Ingredients
- 4 skinless white-fish fillets, about 5–6 oz (140–170 g) each, 1½ lb (680 g) total, preferably ¾–1 in (2–2.5 cm) thick; cod, haddock, pollock, or hake work well
- ¾ tsp fine salt (4.5 g), divided
- ¼ tsp freshly ground black pepper (0.5 g)
- 1 tsp olive oil (5 ml)
- 4 tbsp unsalted butter (57 g), cut into pieces
- 1 medium lemon, finely zested and juiced, about 1 tsp zest (2 g) and 2 tbsp juice (30 ml)
- 1 small garlic clove, finely minced (about 3 g)
- ¼ cup water or low-sodium fish or vegetable broth (60 ml)
- 2 tbsp finely chopped fresh dill (about 6 g), plus a little extra for serving if desired
- 1 tbsp drained capers (9 g), optional
Instructions
- Prepare the fish and aromatics. Pat the fillets thoroughly dry with paper towels so they brown instead of steaming. Check for pin bones and remove any with clean tweezers. Season both sides with the salt and pepper. Zest and juice the lemon, mince the garlic, and chop the dill before you heat the pan; the sauce comes together quickly once the fish is cooked.
- Heat the skillet. Set a large nonstick or well-seasoned stainless-steel skillet over medium heat and add the olive oil. Let it warm for about 2 minutes. The oil should shimmer but not smoke. If the fillets will not fit without touching, cook them in two batches; crowding the pan makes it harder to brown them evenly.
- Cook the first side. Lay the fish in the skillet with a little space between pieces. Leave it undisturbed for about 4 minutes. Thin fillets may need closer to 3 minutes, while thicker pieces may need longer. The fish is ready to turn when it releases fairly easily and the cooked portion looks opaque about halfway up the sides. If it sticks, give it another 30 seconds rather than forcing it.
- Turn and finish cooking. Use a thin spatula to turn each fillet carefully, then cook the second side for about 3 minutes, adjusting for thickness. Check the thickest part of each fillet with a food thermometer. USDA FSIS guidance sets 145°F (63°C) as the safe minimum internal temperature for fish; the flesh should also look opaque and separate easily with a fork. Transfer the cooked fish to a warm plate.
- Make the lemon-dill butter sauce. Reduce the heat to low and add the butter to the same skillet. When it has mostly melted, stir in the garlic and cook for about 20 seconds, just until fragrant; do not let it brown. Add the water or broth, lemon zest, lemon juice, and capers if using. Stir and simmer gently for about 1 minute, scraping up any browned bits. Take the pan off the heat and stir in the chopped dill.
- Coat and serve. Return the fish to the skillet for 15–20 seconds, spooning the sauce over the top, or plate the fillets and spoon the sauce over them. Taste the sauce and add a pinch more salt or a squeeze of lemon if needed. Serve promptly while the fish is hot and the butter sauce is glossy.
Tips
- Choose similar-sized fillets. Pieces of roughly equal thickness finish at about the same time. If yours vary, check each one separately and move the thinner pieces to the plate as soon as they reach 145°F (63°C).
- Dry the surface and handle gently. Wet fish is more likely to stick and release liquid into the pan. A thin fish spatula helps turn delicate fillets without breaking them; avoid repeatedly flipping or pressing down on the fish.
- Use dried dill only if fresh is unavailable. Start with 2 tsp dried dill (about 1 g) in place of the 2 tbsp fresh. Dried dill is more concentrated and less lively, so stir it into the warm sauce and taste before adding more. Flat-leaf parsley can replace fresh dill, though the sauce will taste less distinctly herbal.
- Keep the sauce gentle. Butter can separate if boiled hard, and garlic can turn bitter if browned. Use low heat for the sauce and take the pan off the burner before stirring in the dill. If the sauce thickens while you plate, loosen it with a teaspoon or two of warm water.
Serving Suggestions
Serve the fish with steamed rice, boiled baby potatoes, or mashed potatoes to catch the lemon-butter sauce. For a lighter plate, pair it with roasted asparagus, green beans, peas, or a crisp green salad. A slice of crusty bread is useful for soaking up any sauce left on the plate. If you are serving several people, bring the skillet sauce to the table separately or spoon it over the fish just before serving so the fillets stay intact.
The sauce is rich but sharp with lemon, so simple sides usually work better than heavily seasoned ones. Salt the side dish modestly, then adjust at the table. For a complete meal, allow one fillet per person and add a generous portion of vegetables or potatoes. If the fillets are unusually small, two smaller pieces per serving make the dish easier to portion and serve.
Variations
Use another fish. Haddock, pollock, hake, and tilapia can replace cod. Salmon also works, although it has a richer flavor and may need a little more cooking time depending on thickness. Whatever fish you choose, use a thermometer and cook each piece to 145°F (63°C). Very thin fillets are more fragile, so turn them carefully and shorten the cooking time as needed.
Add a mild allium. Cook 1 tbsp finely minced shallot (about 10 g) in the butter for 1–2 minutes before adding the garlic. Shallot gives the sauce a sweeter, rounder flavor. You can also add 1 tbsp chopped chives (about 3 g) with the dill for a gentle onion note.
Make it dairy-free. Replace the butter with 3 tbsp (45 ml) olive oil and use water rather than broth if you want to keep the sauce simple. The result will be lighter and more olive-forward, not as creamy or buttery. Whisk the lemon juice into the oil off the heat, then add the herbs.
Bring in a little heat. Add a small pinch of red-pepper flakes (about 0.2 g) to the butter with the garlic, or finish with a few turns of black pepper. For a brinier, sharper sauce, keep the capers; leave them out if serving someone who prefers a milder flavor. A few thin slices of lemon can be warmed in the sauce, but avoid cooking the fish with lots of lemon slices pressed against it, which can make the flavor overly sharp.
Storage and Reheating
Refrigerate leftover fish within 2 hours of cooking, in a shallow airtight container. It keeps for 3–4 days in the refrigerator. Store any extra sauce with the fish if convenient, but expect the butter to firm up when cold; that is normal. For the best texture, avoid leaving the cooked fish at room temperature while serving for an extended meal.
Reheat only the portion you plan to eat. Warm the fish gently in a covered skillet over low heat with a teaspoon of water, or microwave it in short intervals until heated through. USDA FSIS guidance says leftovers should reach 165°F (74°C) when reheated; check the thickest portion with a food thermometer. Fish can become dry when reheated, so stop as soon as it reaches that temperature. You can refresh the sauce with a small squeeze of lemon or a teaspoon of water, but do not rely on extra sauce to cover fish that has dried out.
Freezing is possible, though the texture may soften after thawing. For better quality, freeze cooled fish in a well-sealed freezer-safe container for up to 2 months. Thaw it overnight in the refrigerator and reheat it to 165°F (74°C). Freshly cooked fish is best for the cleanest, flakiest texture, so freezing is most useful when you need to save leftovers rather than prepare the dish well ahead.
Frequently Asked Questions
Can I use frozen fish?
Yes. Thaw it completely in the refrigerator, then pat it very dry before seasoning. If you cook fish while it is still icy, it may release extra water and cook unevenly. Avoid thawing seafood on the counter; refrigerator thawing keeps it chilled while it defrosts.
How do I keep fish from sticking to the pan?
Start with a clean, properly heated skillet, a small amount of oil, and dry fillets. Let the first side cook undisturbed until it releases more easily. A nonstick skillet is especially helpful for delicate or thin fish. If a piece begins to tear, slide the spatula farther underneath rather than pulling it away from the pan.
Can I make the lemon-dill sauce ahead?
It is best made just before serving because it takes only a few minutes and has its freshest flavor then. You can chop the dill, mince the garlic, and measure the other ingredients earlier in the day; keep the dill refrigerated in a covered container. If you do make the sauce ahead, rewarm it gently and stir well, since melted butter can separate as it cools.
What if my fish fillets are thicker than 1 inch?
Use the same skillet method, but expect the fish to need longer, particularly on the second side. Turn the heat down slightly if the outside is browning before the center is done. Check the thickest part with a thermometer and continue cooking until it reaches 145°F (63°C); cooking time is a guide, while the temperature confirms doneness.
Can I make this recipe without capers?
Absolutely. Capers are optional and add a salty, tangy note, but the lemon and dill still make a flavorful sauce without them. If you leave them out, taste before adding extra salt, especially if you use salted butter or a salty broth. A little chopped parsley or chive can add another fresh note, but neither is necessary.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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