Creamy Baked Fish on Potato Gratin Recipe

Knowing the creamy, cheesy secret to this potato gratin baked fish recipe will make dinner unforgettable.

Imagine flaky, tender fish enveloped in a decadent, creamy potato gratin.

Get ready to discover the secret to this surprisingly simple yet irresistibly elegant dish, perfect for a weeknight indulgence or a special occasion centerpiece.

Ingredients

ingredient directions or directions

Let's gather what you'll need! First, you'll want four 5-oz white fish fillets—skinless, of course! I like barramundi, but snapper or even cod will work too. Don't forget about a half-teaspoon of salt and a quarter-teaspoon of pepper to jazz 'em up!

Now, for the potato gratin, grab 3 tablespoons of butter and two large leeks—or onions if you're in a pinch! Chop up three cloves of garlic. We also need two medium starchy potatoes. Plus, gather three-quarters of a teaspoon of salt and a half-teaspoon of pepper.

For liquid sunshine!, a half-cup of dry white wine and a half-cup of veg stock will be amazing. Do not forget one-cup of heavy cream! Cream sauces add richness and complement the fish.

Finally, for the crunchy topping, three-quarters of a cup of panko crumbs, two tablespoons of olive oil, and a quarter-cup of shredded parmesan. Got it all? Great!

Preparations

getting ready planning ahead

Before we dive headfirst into the cooking, I will walk you through the prep! First, I'm cutting my potatoes – quarter them, then slice them about 4mm thick. Think of it like slicing cheese for a sandwich, not too thick, not too thin. Pop those sliced potatoes into a bowl of water. Trust me, it's one of my favorite expert tips!

Next, it's crunch-time, or, well, crunchy topping time! I mix the panko and olive oil in a bowl, and then I stir in the parmesan. A touch of lemon zest would add brightness to compliment the baked fish nicely. Okay, now for seasoning the stars of our show: I sprinkle salt and pepper on both sides of the fish fillets – don't be shy!

Lastly, I'm prepping the leeks – discarding the dark green part and slicing only the white and pale green section and give them a thorough wash to remove any dirt hiding inside.

Instructions

concise phrase identification request

Now that prep work is done, I'm ready to guide us through the step-by-step instructions. First, preheat your oven to 180°C/350°F. Make sure a shelf is in the middle.

Cut your potatoes into quarters, then slice them 4mm thick—think 1/6". Soak these spuds in water. This stops browning and helps reduce starch, so they cook faster. Drain them well before you use them!

Mix panko and 2 tbsp of olive oil in a bowl for our crunchy topping. Stir in that parmesan—¼ cup should do it.

Sprinkle ½ tsp salt and ¼ tsp pepper on your fish fillets.

Melt 3 tbsp butter in a skillet over high heat. Toss in leek and garlic; cook for 3 minutes. Next, add the potatoes, salt, and pepper and cook for 6 minutes—stir constantly! The potatoes should be half cooked by now. Pour in ½ cup white wine, simmer; then ½ cup vegetable stock. Easy peasy!

Recipe Notes

recipe specific instructions here

Fish selection is key here – I've got thoughts on what works best! I like milder white fish fillets, about 0.8" thick – not too thick, not too thin. Barramundi is my fave, but John Dory, snapper, or even cod work. I wasn't sure about salmon, but folks have tried it and loved it!

Leeks need a good wash, so chop off the dark green parts and peel the outer layer. Cut 'em lengthways, wash, and slice. Potatoes? Use floury or all-rounder types to make a nice gratin. Finally, wine adds flavor – don't worry, the alcohol cooks out! If you're skipping it, add more vegetable stock.

And here are my final thoughts:

  • Remember: thicker fish cuts are better!
  • Frozen fish? Thaw and pat dry first.
  • Presentation matters: show the side that was cut off the bone!
  • Not a leek fan? Onions will do.
  • Leftovers keep for 3 days, but don't freeze it!

Nutritional Information

food data health details

Let's explore into what's in this Creamy Baked Fish – the good stuff and the numbers behind it!

So, a serving packs about 710 calories – that's 36% of your daily intake. We've got 41g of carbs (14%), 37g of protein (a whopping 74%!), and 42g of fat (65%).

Now, dig into specifics! You're looking at 22g of saturated fat (138%), 3g of polyunsaturated, and 14g of monounsaturated fat. There's even a tiny bit of trans fat – just 0.4g.

I know, numbers can be overwhelming. Don't worry; I'm here to help! There is 168mg cholesterol (56%) and 1041mg of sodium (45%). Plus, we're adding 1396mg potassium (40%), 4g fiber (17%), and 6g sugar (7%).

Finally, we have 2052 IU of Vitamin A (41%), 33mg of Vitamin C (40%), 194mg of Calcium (19%), and 3mg of Iron (17%). Not bad, eh?

Short Recipe Version

Prep Time: 20 minutes

Cook Time: 45 minutes

Servings: 4

Ingredients:

  • 1.5 lbs white fish fillets
  • 2 lbs potatoes, thinly sliced
  • 1.5 cups heavy cream
  • 1 cup Gruyere cheese, shredded
  • 2 cloves garlic, minced
  • 2 tablespoons butter
  • Salt and pepper to taste

Instructions:

  1. Preheat oven to 375°F (190°C). Grease a baking dish.
  2. Arrange potato slices in the dish.
  3. In a saucepan, heat cream and garlic. Season with salt and pepper.
  4. Pour cream mixture over potatoes.
  5. Top with half of the Gruyere cheese.
  6. Bake for 30 minutes.
  7. Place fish fillets on top of the potatoes. Dot with butter.
  8. Sprinkle with remaining cheese.
  9. Bake uncovered for 15 minutes, or until fish is cooked through.

Nutrition (per serving, estimated):

  • Calories: 450
  • Protein: 35g
  • Fat: 25g
  • Carbohydrates: 20g