Put the vegetable oil into a roasting pan and heat the oven to 180C/350F. By the time the potatoes are prepared the oil will be hot enough for roasting.
Peel the potatoes and cut into 1-2 cm chunks.
Put the diced potatoes in a saucepan and pour over boiled water to cover. Cook the potatoes on the hob or in the microwave for 5 minutes then drain.
Add the potatoes to the oven dish and turn to coat in the oil. Roast for 20 minutes.
Turn the potatoes and add 2 sliced onions, 2 cloves of sliced garlic and the chopped rosemary.
Roast for another 20 minutes then season and serve.
Notes
Tips
try not to break the potatoes edges up when draining or they will lose their cubed shape
time the potato cooking time from turning on the hob or microwave
when cooking in the oven or hob make sure that the potatoes are not crowding each other using a big enough pan or they won't get crisp
if you want to use dried herbs instead use 1 teaspoon rather than a tablespoon or you will over power the dish!
Disclaimer:The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.