Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Flaky cod fillets marinated in a zesty lemon and oregano mixture then baked to perfection, paired with sautéed green beans infused with garlic and olive oil. This mediterranean-inspired seafood ready in about 45 minutes blends (5 oz each) cod fillets, fresh lemon juice, olive oil into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 270 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

Prep: 25 min Cook: 20 min Serves 4 Mediterranean cuisine 270 cal/serving
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Ingredients

Instructions

  1. Step 1: In a small bowl, whisk together 3 tbsp fresh lemon juice, 2 tbsp olive oil, 1 tsp dried oregano, 1/2 tsp salt, and 1/4 tsp black pepper. Place 4 cod fillets (5 oz each) in a shallow dish and pour the marinade over them. Cover and refrigerate for 20 minutes.
  2. Step 2: Preheat oven to 400°F. Arrange marinated cod fillets on a baking sheet lined with parchment paper and bake for 12-15 minutes until the fish is opaque and flakes easily with a fork.
  3. Step 3: While the cod bakes, heat 1 tbsp olive oil and 1 tbsp butter in a large skillet over medium heat. Add 3 minced garlic cloves and sauté for 30 seconds until fragrant.
  4. Step 4: Add 12 oz trimmed fresh green beans to the skillet. Season with 1/2 tsp salt and 1/4 tsp black pepper. Cook, stirring occasionally, for 6-8 minutes until green beans are tender-crisp and coated in garlic butter.
  5. Step 5: Serve baked cod alongside the garlic green beans, spooning any pan juices over the fish.

Equipment for this recipe

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Frequently asked questions

How long does Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans take to make?

Total time is about 45 minutes (25 min prep + 20 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Baked Cod with Lemon-Oregano Marinade and Garlic Green Beans?

Mediterranean seafood like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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