Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Delicate slow-cooked barramundi fillets accented with toasted wattleseed and a tangy finger lime beurre blanc sauce. This australian-inspired seafood ready in about 40 minutes pairs toasted and ground wattleseed, chilled and cubed unsalted butter, finely chopped shallots for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 310 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: 10 min Cook: 30 min Serves 4 Australian cuisine 310 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 275°F (135°C). Lightly brush 4 barramundi fillets with 2 tbsp olive oil and season with 1 tsp salt, 1/2 tsp black pepper, and 2 tsp toasted ground wattleseed. Place fillets on a baking tray lined with parchment paper.
  2. Step 2: Slow-cook the barramundi in the oven for 20-25 minutes until the flesh is opaque and flakes easily with a fork.
  3. Step 3: Meanwhile, prepare the finger lime beurre blanc: in a small saucepan, combine 2 chopped shallots, 1/2 cup white wine, and 2 tbsp white wine vinegar. Simmer over medium heat until reduced to about 2 tbsp, about 8 minutes.
  4. Step 4: Lower heat to very low and whisk in 100 g chilled cubed unsalted butter gradually, one piece at a time, until the sauce is smooth and slightly thickened.
  5. Step 5: Stir in the pulp from 2 finger limes and keep the sauce warm without boiling.
  6. Step 6: Plate the slow-cooked barramundi fillets and spoon the finger lime beurre blanc over the top. Garnish with 1 tbsp chopped fresh parsley before serving.

Equipment for this recipe

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Frequently asked questions

How long does Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc take to make?

Total time is about 40 minutes (10 min prep + 30 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 Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc?

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 toasted and ground wattleseed from drying out.

Can I substitute ingredients in Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc?

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 Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc 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 Slow-Cooked Barramundi with Wattleseed and Finger Lime Beurre Blanc?

Australian 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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