Crispy Lemon Garlic Butter Cod and Potatoes

This one-pan dinner brings together thick cod fillets and golden potato slices, seared until crisp and finished with a shower of Parmigiano-Reggiano, fresh parsley, and a bright squeeze of lemon.

The combination of crispy edges, tender fish, and rich garlic butter makes every bite satisfying. It's a quick, elegant meal that feels special but comes together in about 30 minutes.

Crispy lemon garlic butter cod and potatoes is the kind of dish that looks impressive but is surprisingly simple. Thick cod loin slices are seared in a hot skillet with golden potatoes until both develop a beautiful crust.

A quick garlic butter sauce coats everything, while Parmesan and lemon add savory depth and brightness. The result is a balanced, flavorful dinner that works for weeknights and casual entertaining alike.

Ingredients

Why this recipe works

Searing the cod and potatoes in a hot pan with oil and butter creates a deep golden crust that locks in moisture and adds texture.

The high heat caramelizes the natural sugars in the fish and potatoes, giving them a crispy exterior while keeping the interior tender and flaky. This technique requires minimal attention but delivers maximum flavor.

Finishing the dish with freshly grated Parmesan, parsley, and lemon juice brightens the rich butter and fish. The Parmesan melts slightly into the warm crust, adding a savory, nutty note, while the lemon cuts through the richness. The combination of textures — crispy, tender, and creamy — makes this dish satisfying and memorable.

Notes and substitutions

Choose a firm white fish like cod, halibut, or haddock for the best results. The fillets should be thick and even so they cook at the same rate. If using frozen fish, thaw it completely and pat dry before searing. Golden potatoes, such as Yukon Gold, hold their shape well and crisp up nicely in the pan.

A cast-iron or heavy stainless steel skillet is ideal for getting a good sear. Use a neutral oil with a high smoke point, and don't overcrowd the pan — work in batches if necessary.

Freshly grated Parmigiano-Reggiano melts better and tastes superior to pre-shredded cheese. For the lemon, use fresh juice for the brightest flavor.

• cod loin: halibut, haddock, or another firm white fish fillet
• golden potatoes: Yukon Gold or red potatoes, cut into 1/2-inch slices
• Parmigiano-Reggiano: Pecorino Romano or another hard grating cheese
• fresh lemon: 2 tablespoons bottled lemon juice

Equipment

• Large cast-iron or heavy skillet
• Box grater
• Chef's knife
• Cutting board
• Tongs
• Fish spatula