Step 1

Preheat the oven to 450 degrees F (230 C).

Step 2

For the Garlic Butter:

Step 3

In a small bowl, stir together the softened butter, parsley, minced garlic, minced onion, Dijon mustard, flour, lemon juice, salt, and pepper. Set aside.

Step 4

For the Cod:

Step 5

Heat the oil in a cast iron skillet over medium-high heat. Click for a cast iron skillet.

Step 6

Season the cod fillets with salt and pepper and cook 4 minutes.

Step 7

Turn the cod fillets over and cook 1 minute.

Step 8

Spoon 1/2 tablespoon each of the butter mixture over the top of the fish fillets. The remaining butter will be used later.

Step 9

Transfer the cast iron skillet to the oven and bake for 2 – 4 minutes or until fish is just cooked through and opaque in the center.

Step 10

Add any remaining butter to the pan, and let melt, stirring with juices in pan.

Step 11

Spoon the pan butter over the fish and garnish with the lemon wedges, if desired. Serve immediately.