Parmesan-Crusted Cod Skillet with Garlic Spinach in 30 Minutes

A golden Parmesan crust, crisp breadcrumbs and a fillet of cod that flakes easily under the fork. This skillet dinner comes together in one pan, with garlicky spinach underneath and bright lemon on the side. It is the kind of meal that tastes like a restaurant plate but needs only one skillet and about half an hour of your time.

Parmesan-crusted cod skillet is a simple way to turn two mild fillets into a dinner with real contrast. The fish gets a savory, nutty crust from freshly grated Parmesan and golden breadcrumbs, and the spinach beneath it wilts in the same butter, soaking up garlic and fat as it cooks.

The result is a plate where crisp, tender and fresh flavors sit together in the skillet you cooked in. Everything comes from a short ingredient list, and the method moves quickly from prep to the table.

Ingredients

Why this recipe works

The crust works because the Parmesan and breadcrumbs are pressed onto the fish and then cooked in sizzling butter. The butter carries heat evenly across the surface, so the topping turns deep golden and crisp instead of soggy.

Grating the cheese fresh matters too, since fine shreds melt and brown faster than pre-shredded cheese, which often contains starches that keep it from crisping.

Cooking the spinach directly under the cod means the leaves absorb the garlic and butter while the fish cooks above them.

The fish releases a little moisture as it flakes, and the spinach catches that flavor without becoming waterlogged, because it is spread in a single layer in a hot skillet. Flipping the fillet in the butter at the end lets the bottom crust brown as well, so the whole piece is evenly golden.

Notes and substitutions

Cod is the star because its mild, flaky flesh takes a crust without overpowering it. Look for fillets of similar thickness so they cook at the same rate. Fresh cod is ideal, but thawed frozen fillets work well if you pat them very dry before seasoning. Haddock or halibut can stand in if cod is hard to find.

A 12-inch cast iron skillet holds heat well and gives the crust steady browning, and it goes from stovetop to table.

A box grater produces the fine Parmesan shreds the topping needs, and a thin spatula with tongs makes flipping the delicate fillet easier. If you use a nonstick pan, keep the heat at medium so the crust does not scorch before it browns.

• panko breadcrumbs: fine dry breadcrumbs, or crushed plain crackers for a similar crunch
• unsalted butter: olive oil plus a small knob of butter for the flavor
• baby spinach: chopped kale, cooked a minute or two longer until tender

Equipment

• 12-inch cast iron skillet
• Box grater
• Chef's knife
• Wooden cutting board
• Tongs
• Thin spatula