This grilled cod recipe pairs mild, flaky fish with lemon, garlic, paprika, and fresh parsley, then cooks it over a gas grill. A hot, clean, oiled grate and a careful flip help the fillets brown without sticking, while a thermometer takes the guesswork out of doneness.
Ingredients
- 4 skinless cod fillets, about 6 oz (170 g) each, 1½ lb (680 g) total, ideally 1 inch (2.5 cm) thick
- 1 tbsp (15 ml) olive oil, plus a little extra for the grill grates
- ¾ tsp (4.5 g) kosher salt
- ½ tsp (1 g) freshly ground black pepper
- ½ tsp (1 g) sweet paprika
- 2 medium garlic cloves, finely grated or minced, about 2 tsp (6 g)
- 1 medium lemon, about 2 tbsp (30 ml) juice, plus 1 tsp (2 g) finely grated zest; cut a few extra wedges for serving if desired
- 2 tbsp (28 g) unsalted butter, melted
- 2 tbsp (8 g) chopped fresh parsley
- ⅛ tsp (0.5 g) red pepper flakes, optional
Instructions
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Preheat the grill and prepare the fish. Set a gas grill to medium-high, about 400–425°F (204–218°C), close the lid, and let it preheat for about 10 minutes. The full preparation period is about 15 minutes, including preheating. Meanwhile, check the cod for pin bones, remove any with clean tweezers, and pat the fillets very dry with paper towels. Keep the fish refrigerated until you are ready to season it; there is no need to leave seafood sitting out.
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Season and make the lemon butter. In a small bowl, stir together the olive oil, salt, black pepper, paprika, garlic, and optional red pepper flakes. Rub the mixture over both sides of the cod. In a second bowl, combine the melted butter, lemon juice, and lemon zest. Set the lemon butter near the grill, and keep the parsley separate for finishing.
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Clean and oil the grates. Once the grill is hot, brush the grates clean. Fold a paper towel, dip it lightly in oil, and use long-handled tongs to wipe the grates. Do not pour oil onto the grill or spray it toward an open flame. If your grates are widely spaced or the fillets are delicate, set a clean, preheated fish basket on the grill instead; lightly oil its cooking surfaces, too.
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Grill the first side. Lay the cod across the grates, leaving a little space between portions. Close the lid and grill for about 4–5 minutes without moving the fillets. The fish is ready to turn when the underside has grill marks and releases with gentle pressure from a thin, wide spatula. If it clings, give it another 30–60 seconds rather than pulling and tearing it.
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Turn, baste, and finish cooking. Slide the spatula fully beneath each portion and turn it once. Brush the browned side lightly with lemon butter, close the lid, and grill for another 3–5 minutes. Timing depends on the thickness of the fish, the accuracy of the grill thermometer, and how often the lid is opened. Check the thickest part with an instant-read food thermometer: USDA FSIS gives fish a safe minimum internal temperature of 145°F (63°C). The flesh should also look opaque and separate into moist flakes. If it has not reached 145°F (63°C), continue grilling in short intervals and check again.
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Rest and serve. Transfer the fish to a platter and let it rest for 3 minutes. Spoon over the remaining lemon butter, scatter on the parsley, and serve with lemon wedges. The cod is delicate, so lift it with a broad spatula rather than trying to pick it up by the edge.
Tips
- Choose evenly sized portions. Center-cut fillets around 1 inch (2.5 cm) thick cook at a more predictable pace than thin tail pieces. If your pieces vary in thickness, put thicker portions on the hotter part of the grill first and start checking the thinner ones early.
- Dry fish and grate surfaces well. Moisture can make fish steam and stick instead of forming a clean sear. Pat the cod dry just before seasoning, and clean and oil the grate immediately before grilling. A fish basket is a useful option if your grates are old or the portions are especially fragile.
- Keep the turn gentle. Cod flakes easily, especially once it is nearly cooked. Use a broad, thin spatula, support the whole piece, and turn only once. If a fillet breaks, it is still perfectly good to serve; arrange the pieces on the platter and spoon the sauce over them.
- Make a simple substitution. If fresh parsley is unavailable, use 2 tsp (2 g) dried parsley, or finish with 1 tbsp (3 g) chopped fresh dill. Dried parsley has a milder, less fresh flavor, while dill makes the lemon topping more aromatic. Use unsalted butter as listed so the salt level is easier to control.
Serving Suggestions
Serve the cod as soon as it is rested, while the surface is lightly browned and the center is moist. For a simple plate, add grilled asparagus, zucchini, or bell peppers and a starch that can catch the lemon butter, such as boiled baby potatoes, steamed rice, or couscous. A crisp green salad with a mild vinaigrette gives the meal a fresh contrast without competing with the fish.
If you are grilling vegetables at the same time, start those first if they need longer, then cook the cod near the end so it does not wait around and dry out. Warm flatbread or crusty bread is handy for the buttery lemon juices. For a more substantial meal, serve the fish over rice with a spoonful of pan-free lemon butter and extra parsley; keep any additional sauce separate until serving so the grill marks remain visible.
Variations
Make it herbier: Replace the parsley with chopped dill, chives, or a mix of soft herbs. Add the herbs after grilling rather than mixing them into the butter before it goes over the flame, where small pieces can scorch. A little finely grated lemon zest at the end makes the citrus aroma more noticeable.
Add a smoky-spiced note: Use smoked paprika in place of sweet paprika. For gentle heat, keep the red pepper flakes; for a warmer seasoning, add ¼ tsp (1 g) ground cumin to the rub. These are flavor changes rather than traditional requirements, and the lemon still balances the mild cod.
Use another firm white fish: Haddock, pollock, or halibut can be cooked with the same seasoning. Fillet thickness matters more than the fish name, so begin checking temperature early and cook until the thickest part reaches 145°F (63°C). Halibut is lean and can become dry if left on the grill after it is done.
Grill in foil if you need an easier transfer: Lay each seasoned fillet on a lightly oiled sheet of heavy-duty foil and fold the edges up slightly to hold the butter. The fish will cook more by steaming than direct searing, so it will have less char and may take a little longer. Check the center with a thermometer rather than relying only on the clock. Do not wrap the fish tightly if you want the top to brown.
Storage and Reheating
Refrigerate leftover cod within 2 hours of cooking, transferring it to a shallow airtight container once it is cool enough to handle. It keeps for 3–4 days in the refrigerator. Store the fish and any extra lemon butter together or separately; keeping the fish covered helps prevent it from drying out and picking up other refrigerator odors.
For longer storage, freeze cooled portions in a freezer-safe airtight container for up to 2 months for best quality. Thaw overnight in the refrigerator before reheating. The texture may be a little softer after freezing, so flake thawed cod into tacos, rice bowls, or a salad if it no longer holds together neatly.
Reheat gently in a covered skillet over low heat with a teaspoon or two of water or butter, or in a microwave at reduced power in short bursts. Heat leftovers to 165°F (74°C), checking the center with a food thermometer. Avoid prolonged high heat, which can make lean fish tough. Eat any portion that has been left at room temperature for more than 2 hours only if it is discarded; reheating does not make improperly stored food safe.
Frequently Asked Questions
Can I grill cod directly on gas-grill grates?
Yes. Cod can be grilled directly when the grates are clean, hot, and lightly oiled, and the fillets are thick enough to handle. Let the first side cook until it releases fairly easily before turning. For thin or especially fragile pieces, use a fish basket or foil to make transferring them simpler.
How long does cod take on a gas grill?
For fillets about 1 inch (2.5 cm) thick on a grill at 400–425°F (204–218°C), plan on roughly 8–10 minutes total, turning once. Thinner portions may finish sooner, while thicker pieces need more time. Treat the timing as a guide and use a thermometer to check for 145°F (63°C) in the thickest part.
Should I close the grill lid while cooking cod?
Yes, closing the lid helps the grill hold a steady temperature and cook the top of the fish as well as the side touching the grate. Open it only to turn and check the cod. Repeatedly lifting the lid can lower the heat and extend the cooking time.
How can I stop cod from sticking?
Start with dry fillets and grates that have been scraped clean and lightly oiled. Make sure the grill is fully preheated before adding the fish, then leave the first side undisturbed for several minutes. Fish often releases once its surface has seared; forcing it loose too early can tear the flesh.
Can I use frozen cod?
Yes, but thaw it completely in the refrigerator before grilling, then pat it very dry. Ice or excess moisture makes the fish less likely to sear cleanly and can cause uneven cooking. Do not thaw seafood on the counter; if you need a faster method, keep it sealed and thaw it in cold water, then cook it promptly.
How do I know when grilled cod is done?
Check the thickest part with an instant-read thermometer; fish is safely cooked at 145°F (63°C), the USDA FSIS safe minimum. At that point the flesh should be opaque and flake readily with a fork. If the center is below temperature, return the fillet to the grill and check again shortly, taking care not to overcook it.
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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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