Tuna sandwiches on wooden boards

Tuna, Onion & Tomato Sandwich With Mayo Recipe

By the wlr team

If you’re looking for a filling lunch, this tuna, onion and tomato sandwich will do the trick! A quick and easy, low fat and low calorie meal that will keep you going throughout the day.

  • Recipe makes: 1 sandwich
  • Prep time:
    10 mins
  • Calories: 357
    per sandwich


  • 2 slices medium sliced wholemeal bread
  • 15g light mayonnaise
  • 93g tuna chinks in spring water, drained
  • ½ small onion
  • 1 small tomato


  1. Chop the onion and tomato into small pieces.
  2. Drain a can of tuna and mix with the onion, tomato and mayonnaise. Finish by adding a sprinkle of pepper.
  3. Spread the mixture onto the bread, there is no need for butter as the mixture is moist enough.

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Nutrition information per sandwich
Calories (kcal)357
Carbohydrate (g)38.9
Fat (g)7.5
Protein (g)33.2
Fibre (g)7.4
Alcohol (g)0.0
Fruit & Veg1.8

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