Tuna with peppery tomatoes & potatoes

Tuna with peppery tomatoes & potatoes

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(36 ratings)

Prep: 10 mins Cook: 25 mins


Serves 4

Sweet peppers make a great addition to grilled meats and fish. A great al fresco meal with fresh flavours

Nutrition and extra info

  • veg only
  • Easily halved

Nutrition: per serving

  • kcal371
  • fat11g
  • saturates2g
  • carbs31g
  • sugars11g
  • fibre4g
  • protein40g
  • salt0.48g


  • 4 tuna steaks
  • 1 tbsp olive oil
    olive oil

    Olive oil

    ol-iv oyl

    Probably the most widely-used oil in cooking, olive oil is pressed from fresh olives. It's…

  • 3 garlic cloves, crushed
  • few thyme sprigs


    This popular herb grows in Europe, especially the Mediterranean, and is a member of the mint…

  • 500g bag new potato, sliced about 1cm thick
    New potatoes

    New potatoes

    n-ew po-tate-oes

    New potatoes have thin, wispy skins and a crisp, waxy texture. They are young potatoes and…

  • 2 red peppers, cut into large chunks
  • 1 red onion, cut into eighths
  • 1 green chilli, deseeded and chopped
  • 400g can cherry tomato


  1. Heat oven to 220C/fan 200C/gas 7 and put in a roasting tin to heat up. Put the tuna in a shallow dish with half the oil, two-thirds of the garlic and leaves from 1 sprig of thyme. Leave to marinate while you cook the veg.

  2. Put the potatoes, peppers, onion and chilli into the roasting tin with the remaining oil, toss to coat, then roast for 20 mins. The potatoes should be tender or very nearly there. If not, give them another 5 mins (the cooking time can depend on the variety of potato). Add the remaining garlic and thyme to the pan, let them sizzle, stir in the tomatoes, then cook for 5 mins more until the sauce has reduced a little. Season to taste.

  3. With a few mins to go, heat a griddle or frying pan, wipe most of the garlic marinade off the fish with kitchen paper, season, then sear for 1 min each side for medium or longer if you prefer. Serve on top of the veg.

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Comments, questions and tips

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April H
30th Jan, 2020
Very tasty dish though the potatoes needed an extra five minutes and adding some fresh cherry tomatoes Into the mix is nice. Also works really well as a vegetarian dish by substituting slices of griddled halloumi for the tuna steaks.
4th Aug, 2019
Really, really good! The roasted veggie part of the recipe would work well with any fish dish or grilled chicken. I made a few modifications to the written recipe - the veggies needed close to an hour in a 400 degree F oven here in the states (I used russet baking potatoes and we like them mashably soft). I also used about a pound of chopped fresh cherry tomatoes from my garden instead of the tin of tomatoes. The jalapeno chili pepper mellowed to a lovely level of brightness in the oven. Will definitely make this again ... and again ... thanks BBC Good Food!
25th Jul, 2019
Good recipe I sliced the potatoes about half a cm thick and used fresh cherry tomatoes halved. Timings etc fine like this.
29th May, 2019
Really really tasty recipe however I cut the potatoes up and the cooking time was still too short. I'd recommend an extra 10-15 mins depending how well cooked you like them
20th May, 2019
A tasty dish, and quick and easy to cook. I used red potatoes instead of new, quartered and cut into 1cm slices. They weren't properly cooked even after the additional 5 minutes so I would add 10 minutes before stirring in the tomatoes next time. I served it with broccoli, which was a good accompaniment.
21st Oct, 2016
Really loved this dish, used a george foreman to grill the tuna. I didn't use thyme or chopped tomatoes with the potatoes but instead used a dash of soy with the red onions, red pepper, chilli and new potatoes and it all went really well together.
27th Oct, 2014
Very nice indeed, just made on spec, so hadn't bought in the ingredients, I happened to have almost everything I needed bar the fresh green chilli...just used some chilli flakes instead...lovely
Auntie Ellen
16th May, 2012
We really liked this, tuna was a little bland though. Froze the left over veggies and had them with cajun salmon - even yummier! Will def make again. Dead easy too. Will add more spuds next time.
1st Sep, 2010
I used fresh skinned tomatoes and the result was excellent
20th Apr, 2010
Just made this. took advice and i par boiled the potatoes first. thought it was an easy dish but only ok. thought it was a bit bland and missing something. I'm not sure what though...


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egreenwood20's picture
11th Jun, 2014
Make with sweet potato instead of regular potatoes for an even sweeter addition to the salty tuna!
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