Cod Recipes: Easy Lemon-Herb Baked Cod for Weeknights

Lemon-herb baked cod is a simple oven-cooked fish dish made with mild cod, butter, olive oil, garlic, lemon, and parsley. The bright, lightly buttery topping seasons the fish without hiding its delicate flavor, and the short bake makes it practical for a weeknight dinner.

Ingredients

1½ lb cod fillets (680 g), cut into 4 portions about 1 inch (2.5 cm) thick
1 tbsp olive oil (15 ml)
4 tbsp unsalted butter (57 g), melted
2 tbsp fresh lemon juice (30 ml)
1 tsp finely grated lemon zest (about 2 g)
2 garlic cloves (about 6 g), finely minced
¾ tsp kosher salt (about 4.5 g; use about ½ tsp fine table salt instead)
¼ tsp ground black pepper (about 0.5 g)
½ tsp sweet paprika (about 1 g)
2 tbsp finely chopped fresh parsley (about 8 g), plus a little more for serving if desired
1 tbsp drained capers (about 9 g), optional
1 lemon, cut into wedges for serving

Instructions

Heat the oven to 400°F (204°C). Lightly oil a shallow baking dish large enough to hold the cod in one layer. If the portions are crowded or stacked, they will cook unevenly; use two dishes if necessary.
Pat the cod dry on all sides with paper towels. This removes surface moisture so the butter mixture clings to the fish rather than thinning out in the dish. Check for pin bones by running clean fingertips along the center of each portion and pull out any you find with clean tweezers.
In a small bowl, stir together the melted butter, olive oil, lemon juice, lemon zest, garlic, salt, pepper, paprika, parsley, and capers if using. Spoon the mixture over the cod, turning the portions once so the tops and sides are coated. Set the fish in the prepared dish with a little space between pieces.
Bake uncovered for 12 to 16 minutes. Begin checking at 12 minutes because thinner portions can finish quickly; thicker pieces may need the full time. The fish should look opaque and separate into moist flakes when gently pressed. For food safety, check the thickest part with a food thermometer: USDA FSIS recommends a safe minimum internal temperature of 145°F (63°C) for fish. If it has not reached that temperature, return it to the oven and check again after a short interval.
Carefully spoon some of the lemon-butter juices from the baking dish over the portions, then serve hot with lemon wedges. The fish is delicate, so lift each piece with a thin spatula rather than trying to turn it in the dish.

Tips

Choose portions of similar thickness. Matching the thickness matters more than matching the exact weight: small, thin tail pieces cook sooner than thick center cuts. If your portions vary, check each one separately and remove pieces as soon as they reach 145°F (63°C), leaving thicker pieces in the oven.
Thaw frozen cod safely. For the most even result, thaw it overnight in the refrigerator, still wrapped or in a covered container. If you are short on time, place sealed fish in cold water and change the water every 30 minutes; cook it promptly after thawing. Avoid thawing fish on the counter, and pat it especially dry before seasoning.
Adjust salt for the butter and capers. This recipe uses unsalted butter and a modest amount of capers. If you use salted butter, reduce the added kosher salt to about ½ teaspoon; if your capers are particularly salty, rinse and drain them or leave them out. Taste the buttery sauce before adding extra salt.
Do not rely on flaking alone. Cod can look white and separate into flakes before its center has reached a safe temperature, while overcooking makes it dry and firm. A quick thermometer reading in the thickest part is more reliable than appearance. Keep the thermometer probe away from the baking dish.

Serving Suggestions

Serve the cod as soon as it comes out of the oven, with a spoonful of the lemony pan juices over each portion. Steamed rice, couscous, or boiled baby potatoes are useful sides because they soak up the sauce without competing with the fish. For a fuller plate, add roasted asparagus, green beans, or broccoli; start vegetables before the fish if they need longer in the oven.

A crisp green salad with a simple vinaigrette adds freshness, while warm crusty bread is handy for catching the remaining butter and lemon. If you serve the cod with pasta, choose a small shape or thin strands and keep the sauce light. A little chopped parsley and an extra squeeze of lemon at the table are usually enough to finish it; additional salt is best offered separately so diners can season to taste.

Variations

Make it dairy-free: Replace the butter with another tablespoon of olive oil, for 2 tablespoons total. The topping will be less creamy and more olive-oil-forward, but the lemon, garlic, and herbs still season the fish well. A dairy-free butter substitute can also work; check whether it is salted and adjust the added salt.

Change the herbs: Use 1 tablespoon chopped dill or chives instead of parsley, or combine 1 tablespoon parsley with 1 teaspoon chopped thyme. Dill gives the dish a fresh, distinctly lemon-friendly flavor; thyme is earthier, so use it sparingly. Dried herbs are more concentrated: use about 1 teaspoon dried parsley or thyme in place of the fresh herbs, and add them to the butter mixture before baking.

Add a mild chile note: Stir ⅛ teaspoon (about 0.3 g) crushed red pepper flakes into the sauce. For a more savory finish, keep the capers and add 1 tablespoon (9 g) finely chopped green olives instead, or use both in smaller amounts. Olives and capers are salty, so taste the mixture before adding extra salt.

Use another white fish: Haddock, pollock, or hake can stand in for cod in equal weight, though thinner fillets may cook faster. Salmon is a richer alternative and may need a different cooking time depending on thickness. Whatever fish you choose, use a food thermometer and cook it to 145°F (63°C); do not assume the cod timing applies exactly to a different cut.

Storage and Reheating

Refrigerate leftover cod within 2 hours of cooking, transferring it to a shallow airtight container so it cools promptly. Store it in the refrigerator for 3 to 4 days. Keep any extra lemon wedges separately, and spoon a little of the pan sauce over the fish before covering it to help limit drying. Do not leave cooked fish at room temperature for longer than 2 hours, or 1 hour when the room or outdoor temperature is above 90°F (32°C).

For best texture, reheat only the portion you plan to eat. Put the cod in a covered oven-safe dish with a teaspoon of water or a little reserved sauce and warm it in a 300°F (149°C) oven until the center reaches 165°F (74°C), the USDA FSIS temperature for reheated leftovers. Check with a food thermometer. A microwave also works: cover the fish, heat it in short intervals at medium power, and check the center between intervals. Reheating can make cod firmer, so avoid prolonged high heat.

Cooked cod can be frozen, although thawing and reheating may soften its texture. Pack cooled portions in a freezer-safe airtight container, label them with the date, and use within about 2 to 3 months for better quality. Thaw in the refrigerator and reheat to 165°F (74°C). Do not refreeze fish that has been thawed at room temperature.

Frequently Asked Questions

Can I use frozen cod without thawing it first?

Thawed cod is preferable for this recipe because it is easier to dry and the portions cook more evenly. You can bake fish from frozen, but the timing will be longer and less predictable; separate any frozen-together pieces, remove excess ice, and check the thickest part with a thermometer. Cook to 145°F (63°C), rather than relying on the timing given for thawed fish.

How do I know when baked cod is done?

Check the thickest part of a portion with an instant-read food thermometer. Fish is safely cooked at 145°F (63°C), the USDA FSIS safe minimum. The flesh should also be opaque and flake with gentle pressure, but those visual cues are secondary to the thermometer reading. Insert the probe from the side if the pieces are too thin for a straight-down reading.

Can I prepare the lemon-butter mixture ahead?

Yes. Mix the sauce up to a day ahead and refrigerate it in a covered container. The butter will solidify, so let the mixture soften until stirrable, or warm it very gently just until it can be mixed again. Keep the raw cod refrigerated and separate from the sauce until you are ready to bake; do not leave either on the counter while preparing other parts of the meal.

What can I use instead of cod?

Haddock, pollock, and hake are mild white fish that work well with the lemon, garlic, and parsley topping. Choose fillets close to the cod portions’ thickness so the cooking time is similar, and begin checking early if they are thinner. A different fish may have a richer flavor or softer texture, but the same food-safety target applies: 145°F (63°C) in the thickest part.

Why did my cod turn out dry?

It may have cooked too long, especially if the pieces were thin or uneven. Start checking at 12 minutes, remove portions individually once they reach 145°F (63°C), and avoid leaving the fish in the hot baking dish while other food is being finished. Previously frozen fish can also release extra moisture, so thaw it fully and pat it dry before adding the sauce.

Can I double the recipe?

Yes. Double the ingredients and use two baking dishes, or a single dish large enough to hold all the portions in one uncrowded layer. The bake time may be close to the original if the oven has room for good air circulation, but crowded pans and cold fish can take longer. Check each portion’s thickest part and serve only when it reaches 145°F (63°C).

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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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