01 -
Set the oven to 400°F to prepare for baking.
02 -
In a medium bowl, mix melted butter, minced garlic, garlic powder, onion powder, lemon zest, lemon juice, and red pepper flakes until well blended.
03 -
Toss the cod fillets in the lemon butter sauce, ensuring each piece is evenly coated.
04 -
Place the coated fillets in a 9×13-inch baking dish, pour remaining sauce over the top, and arrange lemon slices around and on the fish.
05 -
Bake in the preheated oven for 10 to 15 minutes, until fish is opaque and flakes easily with a fork.
06 -
Sprinkle chopped fresh parsley over the baked fillets and serve immediately.