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Basa With Lemon Mash & Pesto

Basa With Lemon Mash & Pesto

4.5rating out of 5

(844 reviews from our customers)

Prep Time

30 min



Baked basa sits on top of luxurious lemon mashed potato. You'll make sweet, slow roasted cherry tomatoes to accompany, along with a delicious cheesy basil and parsley pesto

Prep Time

30 min



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!

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 lemon
1 garlic clove
basil 3.18
10g fresh basil
10g parsley
40g Irish mature cheddar †
125g cherry tomatoes
400g potatoes
2 x 100g basa fillets †
You Will Need
Food processor / pestle & mortar, butter, olive oil, pepper, salt

Nutritional Information*

Percentages are based on an adult's daily intake

  • 1 lemon
  • 1 garlic clove
  • 10g basil
  • 10g parsley
  • 40g cheddar cheese<span class="strong">†</span>
  • 125g cherry tomatoes
  • 400g potatoes
  • 2 x 100g basa fillets<span class="strong">†</span>
Typical Values per 100g per serving
Energy 343 kJ
81 kcal
1526 kJ
362 kcal
of which saturates
2.2 g
1.3 g
9.9 g
5.9 g
of which sugars
10.5 g
1.1 g
46.9 g
5.1 g
Fibre 1.4 g 6.2 g
Protein 6.2 g 27.8 g
Salt 0.14 g 0.64 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 lemon
1 garlic clove
10g basil
basil (100%)
10g parsley
flat parley (100%)
40g cheddar cheese
pasteurised cows milk, cream, salt, vegetarian rennet, lactic acid culture
125g cherry tomatoes
cherry tomatoes
400g potatoes
2 x 100g basa fillets
basa fillet (fish) 100%
  • Allergens highlighted by † (milk, 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 Sea Bass With Lemon Mash & Pesto

Preheat the oven to 180°C/ 160°C (fan)/ 350°F/ Gas 4

Boil a kettle 

Peel and cut the potatoes into small, bite-size pieces

Add them to a pot, cover with boiled water and a pinch of salt and bring back to the boil over a high heat

Once boiling, cook for 10-15 min until the potatoes are fork-tender


2 Sea Bass With Lemon Mash & Pesto

Meanwhile, cut the cherry tomatoes in half 

3 Sea Bass With Lemon Mash & Pesto

Pat the basa fillets dry with kitchen paper and add them to a baking tray with the cherry tomatoes (use tin foil to avoid mess!) with a drizzle of olive oil and a pinch of salt and pepper

Put the tray in the oven for 12-15 min or until cooked through
Tip: Your fish is cooked once it turns opaque and flakes easily

4 Sea Bass With Lemon Mash & Pesto

Meanwhile, roughly chop the garlic

Chop the parsley and basil roughly, including the stalks

Slice the lemon[s] in half and cut 2 [4] wedges and set them aside for serving 

5 Sea Bass With Lemon Mash & Pesto

Add the garlicparsley and basil to a mortar and grind to a coarse paste

Grate the cheese directly into the mortar and continue to grind together to make a paste

Drizzle over enough olive oil to loosen the mix and add a squeeze of lemon juice 

Season with a pinch of salt and pepper and set aside - this is your pesto

6 Sea Bass With Lemon Mash & Pesto

Drain the cooked potatoes and leave them to steam-dry for 5 min

Tip: this allows the potatoes to dry out, making them perfect for mashing later!

7 Sea Bass With Lemon Mash & Pesto

Return your potatoes to the pot 

Add 2 tbsp [4 tbsp] of lemon juice, a knob of butter and a drizzle of olive oil

Mash until smooth

Season with a pinch of salt and pepper - this is your lemon mash


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Serve the basa fillets over the lemon mash with the cherry tomatoes and pesto to the side

Garnish with a wedge of lemon


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