Baked Cod with Lemon-Dill Sauce and Roasted Asparagus

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Tender baked cod fillets topped with a bright lemon-dill sauce served alongside perfectly roasted asparagus for a fresh Whole30 seafood meal. This mediterranean-inspired seafood (whole30, gluten free) ready in about 30 minutes blends (6 oz each) cod fillets, tablespoons, chopped fresh dill, minced garlic cloves 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 280 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: 10 min Cook: 20 min Serves 4 Mediterranean cuisine 280 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F. Arrange 1 lb trimmed asparagus spears on a rimmed baking sheet and toss with 2 tablespoons olive oil, 1/2 teaspoon sea salt, and 1/4 teaspoon black pepper. Roast for 15 minutes until tender and slightly caramelized.
  2. Step 2: While asparagus roasts, place 4 cod fillets in a baking dish. Drizzle with 2 tablespoons olive oil and season with 1/2 teaspoon sea salt and 1/4 teaspoon black pepper.
  3. Step 3: Bake the cod in the oven alongside the asparagus for 12-15 minutes, until the fish flakes easily with a fork.
  4. Step 4: In a small bowl, whisk together 3 tablespoons fresh lemon juice, 2 tablespoons chopped fresh dill, and 2 minced garlic cloves.
  5. Step 5: Remove cod and asparagus from oven. Spoon the lemon-dill sauce evenly over the cod fillets. Serve immediately with roasted asparagus on the side.

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Frequently asked questions

How long does Baked Cod with Lemon-Dill Sauce and Roasted Asparagus take to make?

Total time is about 30 minutes (10 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-Dill Sauce and Roasted Asparagus?

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-Dill Sauce and Roasted Asparagus?

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-Dill Sauce and Roasted Asparagus 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.

Is Baked Cod with Lemon-Dill Sauce and Roasted Asparagus whole30?

Yes — this recipe is tagged whole30, gluten free, dairy free based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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