Parmesan Crusted Cod with Lemon Garlic Butter Spinach in One Skillet Step-by-step instructions

Before you start

Measure every ingredient into small prep bowls, pat proteins or vegetables dry with paper towels, and preheat your pan thoroughly before adding oil so browning starts cleanly without steaming.

Take your time with each step, and the result will be worth every minute spent in the kitchen.

Instructions

Prep and Aromatics

1. 1Grate the Parmesan and mix the crust
   Grate the Parmesan on the fine side of a box grater so it falls in light golden shreds. Stir it together with the breadcrumbs in a small bowl until evenly combined. Set the bowl aside near the stove.
   Look for Parmesan falls in fine, fluffy golden shreds and the mixture looks sandy and even.
   Tip Freshly grated Parmesan melts and browns more evenly than pre-shredded cheese.
2. 2Prepare the cod and aromatics
   Pat the cod fillets dry with paper towels and season both sides with flaky salt and black pepper. Mince the garlic and slice the lemon into thin rounds. Chop the parsley and keep it ready for serving.
   Look for Fillets feel dry to the touch and the garlic is finely minced.
   Tip Dry fish browns better and the crust sticks more firmly.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Main Cooking Stage

3. 3Melt the butter and build the sauce
   Set the skillet over medium heat and add the butter and olive oil. When the butter melts and foams, add the minced garlic and lemon slices. Let them sizzle gently for about 1 minute until fragrant.
   Look for Butter foams and sizzles and the garlic smells fragrant without browning.
   Tip Lower the heat if the garlic starts to darken.
4. 4Wilt the spinach in the garlic butter
   Add the spinach leaves to the buttery garlic sauce and toss with tongs. Cook for about 1 to 2 minutes until the leaves wilt completely. Season lightly with salt and push the spinach to the sides of the pan.
   Look for Spinach is fully wilted and coated in glossy garlic butter.
   Tip Toss the spinach constantly so every leaf absorbs the butter.
5. 5Crust and sear the cod
   Lay the cod fillets in the center of the pan on top of the spinach. Press the Parmesan and breadcrumb mixture firmly onto the top of each fillet. Cook for 4 to 5 minutes, spooning the bubbling butter over the fish.
   Look for The crust starts to turn golden and the butter bubbles around the fish.
   Tip Spoon the hot butter over the crust to help it brown evenly.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Final Glaze and Plating

6. 6Flip the fillets and finish cooking
   Use tongs to flip the fillets carefully, keeping the crust side up in the butter. Cook for another 3 to 4 minutes, basting until the crust is deep golden brown and the flesh is opaque and flakes easily. The fish must reach 145°F (63°C) at its thickest part.
   Look for Crust is deep golden brown and the flesh flakes easily with a fork.
   Safe temperature 145°F (63°C) internal temperature (fish)
   Tip Check the thickest part with an instant-read thermometer for certainty.
7. 7Serve with lemon and parsley
   Spoon the garlicky lemon butter spinach onto plates and set a golden cod fillet on top. Garnish with lemon wedges and a scatter of chopped parsley. Serve right away while the crust is crisp.
   Look for Crust stays crisp and the sauce glistens over the spinach.
   Tip Squeeze the lemon wedges over the fish just before eating.

Every ingredient is evenly coated, fragrant and progressing at a steady gentle sizzle without sticking to the pan surface.

Take a moment to check the color, texture and aroma before moving on to the next stage.

Common mistakes

Avoid crowding the pan or flipping too early before a crust forms, keep the burner at steady medium-high heat so aromatics never scorch, and season in balanced layers rather than only at the end.

How to tell it’s done

The dish is ready when the exterior shows even golden color, the center feels tender when pressed gently with a fork, and the sauce coats the back of a spoon glossy and fragrant.

• Fish: 145°F (63°C) in the thickest part