Baked Cod with Lemon-Garlic Roasted Sweet Potatoes

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

Delicate cod fillets baked with lemon and garlic, served atop roasted sweet potatoes for a simple, flavorful Whole30 dinner. This mediterranean-inspired whole30 ready in about 40 minutes pairs (6 oz each) Cod fillets, thinly sliced Lemon, minced Garlic for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 350 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: 25 min Serves 4 Mediterranean cuisine 350 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F (220°C). Place sweet potato cubes on a baking sheet, drizzle with 1 tbsp olive oil, and sprinkle with 1/4 tsp salt and 1/8 tsp black pepper. Toss to coat.
  2. Step 2: Spread sweet potatoes in a single layer and roast for 15 minutes, until tender.
  3. Step 3: Pat cod fillets dry with paper towels. Place on top of sweet potatoes, skin-side down (if skin-on). Dot with 1 tbsp minced garlic and 1/4 tsp salt.
  4. Step 4: Drizzle with remaining 1 tbsp olive oil and top with lemon slices.
  5. Step 5: Return to oven and roast for 12-15 minutes, until cod is opaque and flakes easily.
  6. Step 6: Remove from oven, sprinkle with fresh parsley, and serve immediately.

Equipment for this recipe

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Frequently asked questions

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

Total time is about 40 minutes (15 min prep + 25 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 Cod with Lemon-Garlic Roasted Sweet 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 Cod with Lemon-Garlic Roasted Sweet 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 Cod with Lemon-Garlic Roasted Sweet 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 Cod with Lemon-Garlic Roasted Sweet Potatoes?

Mediterranean whole30 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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