Pre-heat the oven to 200°C.
Bake the new potatoes in the oven for 45-50 minutes.
Saute the onion until soft and golden.
Once the potatoes are cooked, score the top and open out the jacket. Add the onion and cheese into the jacket potato and place back in the oven until the cheese is melted and golden.
Potatoes are a great source of Vitamin B6 and potassium, providing important nutrients to help young children grow.