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Ultimate Fish Burger

Ultimate Fish Burger

4.5rating out of 5

(787 reviews from our customers)

Prep Time

35 min



We've called this fish burger 'ultimate' because, quite simply, it is. Crispy panko-crusted fish, melted mature cheddar, caper mayo sandwiched into a toasted brioche bun and skewered together. Served with crispy wedges and a classic lettuce and tomato side salad. This is the business. The fishy business!

Prep Time

35 min



What is Gousto all about?

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What is Gousto all about?

We send you everything you need to cook amazing recipes like this, delivered right to your door. Leave the planning to us!

For 2 people (double for 4)
1 tomato
1 little gem lettuce
1 British free range egg †
2 mayonnaise sachets (52ml) †
1 spring onion
30g caper buds
2 brioche rolls †
2 skewers
40g Irish mature cheddar †
Panko breadcrumbs edit
60g panko breadcrumbs †
300g potatoes
2 basa fillets †
1 tbsp white wine vinegar
You Will Need
Flour, olive oil, pepper, salt, vegetable oil

Nutritional Information*

Percentages are based on an adult's daily intake

  • 1 tomato
  • 1 little gem lettuce
  • 1 British free-range egg<span class="strong">†</span>
  • free-range mayonnaise<span class="strong">†</span>
  • 1 spring onion
  • 1 bag of capers (30g)
  • brioche rolls<span class="strong">†</span>
  • skewers
  • 40g cheddar cheese<span class="strong">†</span>
  • 60g panko breadcrumbs<span class="strong">†</span>
  • 300g potatoes
  • 2 x 100g basa fillets<span class="strong">†</span>
  • 1 white wine vinegar sachet (15ml)
Typical Values per 100g per serving
Energy 615 kJ
144 kcal
3603 kJ
842 kcal
of which saturates
6.6 g
1.8 g
38.7 g
10.8 g
of which sugars
15.8 g
1.7 g
92.4 g
10.1 g
Fibre 1.2 g 6.9 g
Protein 6.9 g 40.2 g
Salt 0.28 g 1.61 g
*Gousto’s nutritional information only applies to ingredients supplied by Gousto. The cooking process and additional ingredients added at home (listed under “What you’ll need”) will affect total values.
Ingredients contain
1 tomato
1 little gem lettuce
little gem lettuce
1 British free-range egg
free-range mayonnaise
rapeseed oil 70% ,water, spirit vinegar, free range pasteurised egg yolks 5 %, sugar, salt, stabilisers (xanthan gum & guar gum), mustard seeds, antioxidant: calcium disodium edta, spices
1 spring onion
spring onion
1 bag of capers (30g)
Capers, water, vinegar, salt.
brioche rolls
WHEAT flour, water, sugar, free range liquid EGG, butter, MILK powder, yeast, asmg, vanilla flavour, salt (anti-cake agent e535), clean label softener (WHEAT flour and enzymes), safpro e300 dough conditioner (WHEAT flour, enzymes, flour treatment agent e300, WHEAT starch)
40g cheddar cheese
pasteurised cows milk, cream, salt, vegetarian rennet, lactic acid culture
60g panko breadcrumbs
wheat flour (gluten), sugar, salt, yeast
300g potatoes
2 x 100g basa fillets
basa fillet (fish) 100%
1 white wine vinegar sachet (15ml)
white wine vinegar
  • Allergens highlighted by † (egg, mustard, eggs, milk, wheat-gluten, gluten, fish)

In addition to the recipe specific allergen information provided, due to production and packing methods Gousto boxes may also contain low levels of the following allergens: Cereals containing gluten; Crustaceans; Eggs; Fish; Peanuts; Soya; Milk; Nuts: almonds, hazelnuts, walnuts, cashews ,pecan nuts ,brazil nuts, pistachio nuts, macadamia nuts; Celery; Sesame; Sulphur dioxide and Sulphites; Lupin; Molluscs; Mustard.

Cooking Instructions
Instructions for 2 people (double for 4)
1 Ultimate Fish Burger

Preheat the oven to 220°C/ 200°C (fan)/ 425°F/ Gas 7

Cut the potatoes (skin on) into wedges

Place them on a baking tray, drizzle with vegetable oil and season generously with salt and pepper

Put them in the oven for 25-30 min or until golden and crispy

2 Ultimate Fish Burger

Meanwhile, cut the fish fillets in half widthways

Tap a few tbsp of flour out onto a plate, then beat the egg[s] and pour them into a shallow bowl

Pour the panko breadcrumbs onto a third plate, then coat the fish in flour, then egg and finally breadcrumbs, pressing firmly to coat them evenly and set aside 


3 Ultimate Fish Burger

Cut the brioche buns in half

Heat a large, wide-based dry pan (preferably non-stick) over a high heat

Once hot, add the buns, cut-side down, and toast them for 3 min or until coloured and charred on one side only

Once charred, remove and set aside until serving and reserve the pan

4 Ultimate Fish Burger

Slice the spring onion[s] finely

Chop the capers finely

Combine the capers, mayonnaise and white wine vinegar, 2 tbsp [4 tbsp] olive oil and half the spring onion (save the rest for the next step) - this is your caper mayo


5 Ultimate Fish Burger

Dice the tomato[es]

Tear the lettuce up and add it to a salad bowl with the tomatoes and remaining spring onion


6 Ultimate Fish Burger

Once the wedges are nearly cooked, return the reserved pan to a high heat with 3 tbsp [6 tbsp] vegetable oil 

Once very hot, add the breaded fish and cook for 1 min each side until golden 

Meanwhile, slice the cheddar in half lengthways 

7 Ultimate Fish Burger

Transfer the crispy fish to a baking tray (use tin foil to avoid mess!), season it with salt and add the cheese to half of the fillets

Put the tray in the oven for 4 min or until the cheese has just melted


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Assemble your fish burger with a little caper mayo over each brioche base with the cheesy fish atop, and the cheese-less fish over

Secure the top brioche with a skewer 

Serve the salad, wedges and remaining mayo to the side


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