Preheat oven to 400°F (200°C) [1.1]. Lightly grease a 9x13-inch baking dish.
Pat the cod fillets dry with paper towels to prevent mushiness. Season both sides evenly with the salt and black pepper, then arrange them in the prepared baking dish.
In a small bowl, whisk together the melted butter, lemon juice, minced garlic, and capers.
Pour the butter mixture evenly over the fillets.
Bake in the preheated oven for 10-15 minutes, or until the fish reaches an internal temperature of 145°F and flakes easily with a fork.
Remove from the oven, garnish with fresh chopped parsley, and serve immediately.