01 - Pat the cod fillets completely dry using paper towels, then season both sides evenly with salt and pepper.
02 - Place 2 tablespoons butter in a large skillet over medium heat. Cook until fully melted and foaming slightly.
03 - Add minced garlic to the melted butter. Sauté briefly for 30 seconds until fragrant, taking care not to brown or burn.
04 - Gently lay cod fillets in the skillet. Cook for 3 to 4 minutes on the first side until golden, then carefully flip using a thin spatula.
05 - Add remaining butter, fresh lemon juice, and lemon zest to the pan. Baste the fillets continuously with the melting butter sauce while cooking for another 3 to 4 minutes, until the fish is fully opaque and flakes easily with a fork.
06 - Sprinkle chopped parsley over the fillets and remove from heat immediately. Serve at once, spooning the warm lemon garlic butter sauce over each portion. Add lemon wedges on the side if desired.