Lunch

Jacket Potato with Tuna, Sweetcorn and Yogurt

Name: Jacket Potato with Tuna, Sweetcorn and Yogurt
Prep time: 10 min
Total time: 10 min
Yield: 1 serving
Ingredients: 300 g Potato; 120 g Tuna in spring water, drained; 60 g Sweetcorn, tinned and drained; 60 g Greek yogurt, 0% fat; 20 g Spring onion; A squeeze Lemon juice; Plenty Black pepper

A baked potato with tuna, sweetcorn and spring onion bound in 0% Greek yogurt rather than mayonnaise. 43 g of protein for 444 kcal.

Calories: 444kcal
Protein: 43g
Fat: 2g
Carbs: 66g

Per serving, makes 1. 10 minutes of work, then an hour in the oven. Published 8 September 2026.

Allergens

Milk
Fish

Flags follow UK labelling rules and come from the ingredients as listed, not from any particular brand. Check the packet before cooking for somebody with an allergy.

Ingredients

Potato300 g
Raw, peeled weight.
Tuna in spring water, drained120 g
Drained weight. Tuna in oil is about 190 kcal per 100 g even after draining.
Sweetcorn, tinned and drained60 g
Drained weight.
Greek yogurt, 0% fat60 g
Spring onion20 g
Lemon juiceA squeeze
Black pepperPlenty

Method

Prick the potato, rub it with salt and bake at 200°C for an hour, until the skin is crisp and a knife meets no resistance.
Mix the tuna, sweetcorn, sliced spring onion, yogurt and lemon with a lot of black pepper.
Split the potato, rough up the inside with a fork, season it and pile the tuna on top.

Worth knowing

Sixty grams of yogurt in place of the same weight of mayonnaise is 34 kcal against 420. The lemon and pepper cover the difference.
An hour in the oven is the honest time for a 300 g potato. Ten minutes in the microwave and fifteen in the oven gets the skin most of the way there.

Other lunch recipes that share ingredients with this one, or every lunch between 300 and 450 calories a serving.

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Macros are calculated from the weights listed above using standard food composition values, and will shift with your own brands and measuring. Weigh what you can. This is a recipe, not dietary advice. The full health disclaimer is below.