Garlic Herb Butter Cod with Green Beans (Printable)

Tender cod baked with garlic herb butter alongside crisp green beans and baby potatoes on one sheet pan.

# Components:

→ Fish & Marinade

01 - 4 cod fillets (about 5.3 oz each), skinless
02 - 2 tablespoons olive oil
03 - 1 teaspoon lemon zest
04 - 1/2 teaspoon sea salt
05 - 1/4 teaspoon black pepper

→ Garlic Herb Butter

06 - 1/4 cup unsalted butter, softened
07 - 2 cloves garlic, minced
08 - 2 tablespoons fresh parsley, finely chopped
09 - 1 tablespoon fresh dill, finely chopped
10 - 1 tablespoon fresh chives, finely chopped
11 - 1 teaspoon lemon juice
12 - 1/4 teaspoon salt

→ Vegetables

13 - 1 pound baby potatoes, halved
14 - 10 ounces green beans, trimmed
15 - 1 tablespoon olive oil
16 - 1/2 teaspoon salt
17 - 1/4 teaspoon black pepper

# Method:

01 - Preheat oven to 400°F. Line a large baking tray with parchment paper.
02 - Toss baby potatoes with 1 tablespoon olive oil, 1/2 teaspoon salt, and 1/4 teaspoon pepper. Spread on half of the tray. Roast for 10 minutes.
03 - In a small bowl, mix softened butter with minced garlic, parsley, dill, chives, lemon juice, and 1/4 teaspoon salt until well combined.
04 - Pat cod fillets dry with paper towels. Rub with 2 tablespoons olive oil, lemon zest, 1/2 teaspoon salt, and 1/4 teaspoon pepper.
05 - After potatoes have roasted for 10 minutes, add green beans to the tray. Drizzle lightly with olive oil and season with salt and pepper. Toss gently to combine.
06 - Arrange seasoned cod fillets on the tray. Top each fillet with a generous dollop of garlic herb butter.
07 - Return tray to oven and bake for 12 to 15 minutes, until cod is just opaque and flakes easily with a fork, potatoes are golden brown, and green beans are tender-crisp.
08 - Transfer to serving plates and spoon any remaining melted herb butter from the tray over the cod and vegetables.

# Expert Advice:

01 -
  • Everything cooks on one tray: No juggling pots and pans, just one baking sheet that does all the heavy lifting.
  • The herb butter melts into the fish: It's like a flavor bath that makes even a weeknight dinner feel restaurant-quality.
  • Naturally gluten-free: You're not sacrificing anything for dietary needs, this is just how it's meant to be.
  • Ready in 40 minutes flat: Including prep time, which makes it perfect when you're hungry but don't want to order takeout.
02 -
  • Wet fish won't develop flavor: Patting cod dry before seasoning is non-negotiable if you want that subtle caramelization and for the oil to coat properly instead of creating steam.
  • The herb butter sits on top for a reason: Putting it directly on the fish before it goes in the oven means it melts slowly and infuses the delicate flesh rather than burning off into the tray.
03 -
  • Mise en place saves you: Chop all your herbs and mince your garlic before the potatoes go in, so you're not scrambling halfway through.
  • Room temperature herb butter spreads like a dream: If you make it ahead and refrigerate, let it sit out for a few minutes before service so it melts properly into the fish.
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