01 - Preheat your oven to 400°F. Line a baking dish with parchment paper or lightly grease it.
02 - Pat the cod fillets dry thoroughly with paper towels. Season both sides generously with salt and freshly ground black pepper, then drizzle each fillet with olive oil.
03 - Carefully arrange the seasoned cod fillets in the prepared baking dish, ensuring adequate spacing between each piece for even cooking.
04 - Bake the cod for 15–18 minutes, or until the fish flakes easily with a fork and appears opaque throughout its center.
05 - While the cod bakes, melt the unsalted butter in a small saucepan over medium heat. Add the finely minced garlic and sauté for 1 minute until fragrant but not browned. Stir in the lemon zest, lemon juice, and capers (if using). Remove the saucepan from heat and stir in the fresh parsley.
06 - Once the cod is perfectly cooked, carefully transfer the fillets to individual serving plates. Generously spoon the warm lemon butter sauce over each fillet.
07 - Garnish with fresh lemon slices and additional chopped parsley. Serve immediately for optimal flavor and texture.