Oven-Roasted Barramundi with Lemon Myrtle and Garlic

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Delicate barramundi fillets roasted with fragrant Australian lemon myrtle and garlic for a fresh, vibrant seafood dish. This australian-inspired seafood (gluten free) ready in about 30 minutes pairs fillets (6 oz each) barramundi fillets, lemon myrtle powder, thinly sliced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 250 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.

Prep: 15 min Cook: 15 min Serves 4 Australian cuisine 250 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 400°F (200°C). Line a baking tray with parchment paper and place 4 barramundi fillets skin-side down.
  2. Step 2: Drizzle 3 tbsp olive oil evenly over the fillets and sprinkle 1 tsp lemon myrtle powder, 1 tsp sea salt, and 1/2 tsp black pepper over them.
  3. Step 3: Scatter 4 thinly sliced garlic cloves evenly on top of the fillets.
  4. Step 4: Squeeze 2 tbsp fresh lemon juice over the fish and let marinate for 10 minutes at room temperature.
  5. Step 5: Roast the fillets in the oven for 12-15 minutes until the fish is opaque and flakes easily with a fork.
  6. Step 6: Remove from oven and sprinkle with 2 tbsp chopped fresh parsley before serving. Serve with steamed vegetables or a fresh salad.

Frequently asked questions

How long does Oven-Roasted Barramundi with Lemon Myrtle and Garlic take to make?

Total time is about 30 minutes (15 min prep + 15 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 Oven-Roasted Barramundi with Lemon Myrtle and Garlic?

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 lemon myrtle powder from drying out.

Can I substitute ingredients in Oven-Roasted Barramundi with Lemon Myrtle and Garlic?

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 Oven-Roasted Barramundi with Lemon Myrtle and Garlic 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 Oven-Roasted Barramundi with Lemon Myrtle and Garlic gluten free?

Yes — this recipe is tagged gluten 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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