Preheat the oven to 425°F
Rinse the frozen cod under cold water to remove ice crystals
Pat the cod dry with paper towels
Place the cod on a lined baking sheet
Brush or drizzle with oil or melted butter
Season with salt, pepper, and any desired spices
Bake for 15 to 20 minutes, depending on thickness
Check that the fish flakes easily with a fork
Confirm the internal temperature reaches 145°F
Serve immediately