Preheat oven to 375°F (190°C). Pat cod dry.
Melt butter and olive oil in an oven-safe skillet. Sauté garlic for 30 seconds.
Season cod with salt and pepper. Place in skillet. Add lemon juice, lemon zest, and half the parsley.
Bake 12–15 minutes, or until the cod flakes easily with a fork.
Remove from oven. Garnish with remaining parsley and serve immediately.
