Baked Lemon-Thyme Cod with Roasted Garlic Potatoes

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

Flaky cod fillets baked with fresh lemon and thyme, paired with golden roasted garlic potatoes for a bright and satisfying seafood dish. This mediterranean-inspired seafood ready in about 47 minutes pairs (6 oz each) cod fillets, fresh lemon juice, fresh thyme leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 370 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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: 15 min Cook: 32 min Serves 4 Mediterranean cuisine 370 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 425°F. In a large bowl, toss 1 1/2 lbs halved baby red potatoes with 2 tbsp olive oil, 3 minced garlic cloves, 1 tsp salt, and 1/2 tsp black pepper. Spread potatoes on a rimmed baking sheet in a single layer.
  2. Step 2: Roast potatoes for 20 minutes until edges are golden and crisp.
  3. Step 3: Meanwhile, place 4 cod fillets on a parchment-lined baking sheet. Drizzle with 2 tbsp olive oil, 3 tbsp fresh lemon juice, 2 tbsp fresh thyme leaves, 3 minced garlic cloves, 1/2 tsp salt, and 1/2 tsp black pepper. Rub gently to coat evenly.
  4. Step 4: After potatoes have roasted 20 minutes, remove from oven and push them to one side of the pan. Place the cod fillets on the empty side and roast everything together for an additional 12 minutes until the fish is opaque and flakes easily with a fork.
  5. Step 5: Remove from oven, sprinkle 2 tbsp chopped parsley over the fish and potatoes, and serve immediately.

Frequently asked questions

How long does Baked Lemon-Thyme Cod with Roasted Garlic Potatoes take to make?

Total time is about 47 minutes (15 min prep + 32 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover Baked Lemon-Thyme Cod with Roasted Garlic Potatoes?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep (6 oz each) cod fillets from drying out.

Can I substitute ingredients in Baked Lemon-Thyme Cod with Roasted Garlic Potatoes?

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 Lemon-Thyme Cod with Roasted Garlic Potatoes 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 Lemon-Thyme Cod with Roasted Garlic Potatoes?

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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