1. Prepare Seasoning and Cod:

• Pat the cod fillets completely dry with paper towels. This helps them sear rather than steam and prevents sticking. If fillets are very large, cut them into your desired serving sizes.
• In a small bowl, combine the garlic powder, onion powder, paprika, salt, and ground black pepper. Mix well.
• Sprinkle the seasoning mixture evenly over all sides of the cod pieces.

2. Sear Cod (First Side):

• Heat a large skillet over medium-high heat.
• Add 2 tablespoons of the unsalted butter to the hot skillet. Let it melt and foam slightly.
• Carefully place the seasoned cod pieces into the hot butter in the skillet. Do not overcrowd the pan (cook in batches if necessary).
• Cook undisturbed for about 2 minutes, allowing the first side to get a nice sear and become lightly golden.

3. Flip and Finish Cooking with Butter:

• Lower the heat slightly to medium or medium-low to prevent the butter from burning.
• Gently flip the cod pieces using a fish spatula or thin metal spatula.
• Add the remaining 4 tablespoons of butter to the skillet around the fish.
• Continue to cook for another 3-4 minutes on the second side. As the butter melts, you can tilt the pan and spoon some of the melted butter over the fish (basting).
• Cook just until the cod is opaque and flakes easily with a fork. Be careful not to overcook, as it will become dry and fall apart excessively.

4. Add Lemon and Parsley:

• Remove the skillet from the heat.
• Drizzle the freshly squeezed lemon juice over the cooked cod in the pan.
• Sprinkle with fresh chopped parsley.

5. Serve:

• Serve the buttered cod immediately, spooning some of the pan sauce over the top.
• Garnish with fresh lemon slices on the side.