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  • Serves 4
  • 30 minutes
  • Difficulty Easy
  • 13 Ingredients
April 11, 2025

14 Comment

Crisp-skinned barramundi meets the smoothest, creamiest mash in this simple but luxe dish, created by our friends at Humpty Doo Barramundi.

Use a mix of mushrooms – think king browns, chestnut and swiss browns – for visual and textural appeal. Don’t be scared to take the burnt butter sauce to the limit – you want it to be nut brown and fragrant for maximum flavour.


Ingredients (serves 4)

  • 4 Humpty Doo Barramundi Fillet portions
  • 60ml (1/4 cup) olive oil
  • 150g chilled butter, diced
  • 500g mixed mushrooms, sliced, halved or whole, depending on the size
  • 2 garlic cloves, finely chopped
  • 1 tbsp coarsely chopped thyme
  • Finely grate rind and juice of 1 lemon, plus extra wedges to serve
  • 2 tbsp coarsely chopped flat-leaf parsley
  • Wilted spinach, to serve
  • 1kg Sebago or Coliban potatoes, peeled and cut into rough 5cm chunks
  • 300ml pouring cream
  • 60g butter, diced
  • 2 garlic cloves, finely chopped

Method

  1. To make the creamy mash, combine potatoes in a large saucepan with enough cold salted water to cover generously, bring to the boil and cook for 10-12 minutes until potatoes are tender when pierced with a skewer. Drain and return to the pan, then mash until smooth. Bring the cream, butter and garlic just to the simmer in a separate saucepan, gradually add to the potato and mix until smooth. Season generously and keep warm.
  2. Heat a large heavy-based frying pan over medium heat. Season barramundi all over with sea salt and freshly ground pepper. Drizzle with 2 tbsp olive oil and rub into the skin and flesh.
  3. Place barramundi, skin-side down in the heated pan and cook for 6 minutes, turn and cook for another 7 minutes. Transfer to a plate to rest for 2 minutes.
  4. While the barramundi is cooking, heat 30g butter and remaining olive oil in a separate frying pan until the butter is foaming. Add the mushrooms, season to taste and fry, stirring occasionally for 5-6 minutes until mushrooms are tender and golden brown. Stir in the garlic, thyme and lemon rind to combine and season to taste. Transfer to a plate.
  5. Wipe out the pan, add remaining butter and cook, swirling pan occasionally, for 4-6 minutes until butter is browned. Remove from the heat, add lemon juice and parsley and stir to combine.
  6. Divide the creamy mash among serving plates, top with barramundi and spoon garlic mushrooms and brown butter over the top. Serve with wilted spinach and lemon wedges.

  • I hadn’t heard of Humpty Doo Barramundi before but have sourced them now and can’t wait to try this healthy, delicious looking recipe. Thank you for sharing this good recipe and for listing out the ingredients and method. It includes lots of really healthy ingredients which is a big bonus.

    Reply

  • This fish recipe sounds absolutely delicious minus the earthy mushrooms, as I am not a big fan of them. The golden, crispy fish with the smooth, velvety mash sounds truly divine. The bright lemon and aromatic thyme would add wonderful freshness, making it a perfect, delicious dish to enjoy for dinner.

    Reply

  • Oh my lord. I have never heard of making mashed potatoes this way but I am certainly going to give this a try.
    I must admit that I have never thought of serving fish with mushrooms but hey why not? I love mushrooms and im happy to have them with anything

    Reply

  • I am not a fan of mushrooms, but I like the sound of this. Any suggestions to replace the mushrooms?

    Reply

  • You could replace the pouring cream and butter in the mashed potato’s for example with Extra Virgin Olive oil which is considered a healthier fat which has mono unsaturated fatty acids ( mono unsaturated fatty acids can help decrease the “bad” LDL cholesterol and increase “good” HDL cholesterol. Another option could be replacing the pouring cream & butter with cashew cream (also has mono unsaturated fatty acids) or even Greek yogurt.

    Reply

  • Aw mixed mushroom are so yummy !! I could eat just a plate of the mixed mushrooms, maybe with some spinach or broccoli with some cashews on top 😛
    We have no fish eaters in our family so I would replace that with something else, maybe something vegetarian.
    The creamy mash may sound nice but I would be a bit afraid for the fat content with atherosclerosis running in our family.

    Reply

  • We had already planned our menu for Easter, but for the future, we would indeed consider this recipe for a meal at Easter time. Everyone that is a fan of fish would enjoy eating this meal. We look forward to cooking it and getting feedback on the recipe. We will serve up extra mushrooms.

    Reply

  • Barrumundi is a delicious fish to cook and to eat and it is also a filling fish to serve and to eat. I love carbs and mashed potato is a favourite carb to eat. I know many people avoid carbs; I am happy to eat their share; particularly creamy mashed potato.

    Reply

  • You’ve sold me on Humpty Doo Barramundi. I will pick some up next time I’m shopping.

    Reply

  • This looks absolutely amazing and it’s so great that the author is using locally sourced fish! Everything looks so beautiful and fresh and I love the idea of the burnt butter sauce. Crispy skin is definitely a must with fish, but important to not overcook! Mash, wilted spinach and mushrooms are literally my favourite accompaniments too!

    Reply

  • I absolutely love Humpty doo barramundi, it’s a favourite from my local woolies. It always cooks so beautifully and has incredible crispy skin. I’ll have to give this recipe a try, I very regularly have all these ingredients in the house and love switching up from my usual dishes. The creamy mash sounds heavenly

    Reply

  • Humpty Doo Barramundi sounds interesting. This is not a name I have ever come across before. I have tried barramundi before and have always like the texture and flavour so I am sure this version of fish would be very similar. This recipe sounds delightful and a wholesome dish to make.

    Reply

  • Oh yum. This recipe has my mouth watering. I wasn’t hungry before but I certainly am now. Barramundi is delicious and paired with garlic mushrooms and creamy mashed potatoes it would be even better. Served with rge wilted spinach this is definitely my idea of a perfect hearty winters meal. Yum! 🙂

    Reply

  • Ive never heard of ‘humpty doo’ barramundi before – it immediately grabbed my attention! Is this any different to the regular kind? Loving the ingredient list though – it’s everything i love and enjoy so i can imagine this dish being so delicious! Mash and fish always go so well together

    Reply

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