Microwave Jacket Potato with Tuna and Sweetcorn

17 Sep 2023

Jacket potatoes are a healthy and cheap meal and can be livened up with lots of different toppings.

Cooking them in the microwave speeds up the process considerably, but loses the crunchy jacket. By following the method below, the skin is kept dry which improves the texture when cooked.


Jacket Potato
1 medium baking potato (approx.350g uncooked weight)
Tuna and Sweetcorn
1 x 80g can tuna (in spring water)
½ x 198g can sweetcorn
1 x 15ml spoon reduced-fat mayonnaise
Black pepper (optional)


Weighing scales
Sharp knife
Chopping board
Kitchen paper
Microwave-safe plate
Oven gloves
Small bowl
Can opener
Measuring spoon


Jacket Potato

  1. Wash the potato and prick with the sharp knife several times on all sides.
  2. Dry the potato well with kitchen paper and place on a microwave-safe plate.
  3. Place in the microwave and cook on full power for 4 minutes. All timings in this recipe are based on using an 800W microwave.
  4. Remove the plate using oven gloves and turn the potato over. Dry the potato and the plate and put back into the microwave.
  5. Heat on full power for a further 4 minutes.
  6. Remove the plate and leave the potato to stand for a minute, as it will continue to cook. Check that the potato is soft by pushing a sharp knife into the centre. Return to the microwave for another 30 seconds if it is still hard in any part.

Tuna and Sweetcorn

  1. Open the cans of tuna and sweetcorn and drain, then tip into the bowl with the mayonnaise and mix with black pepper (if using).
  2. Split the jacket potato in half, roughly mash the middle with a fork, and spoon over the topping.

Skills used include:
Washing, weighing, measuring, chopping, mixing/combining, mashing and microwaving.

Top Tips

  • If cooking more than one jacket potato, or it is larger than about 350g, you need to extend the cooking time. For each additional potato you need an extra 2–3 minutes.
  • If you prefer a really crunchy skin, do the first 5 minutes in the microwave and then cook in a preheated oven at 200ºC/180ºC fan or gas mark 6 for 30 minutes.

Something to try next time

  • Swap a baking potato for a sweet potato. Prepare it in the same way, then cook in the microwave for 4 minutes, turn over and cook for one more minute.

Why not check out our other jacket potato recipes?

Prepare now, eat later

  • Fillings can be made in advance and kept for up to 24 hours in the fridge, so double them up and use the next day in a sandwich or another jacket potato.