Peel and cut the potatoes into roughly equal sized chunks.
Pre-heat the oven at 200 °C and put tray with oil to heat in the oven.
Parboil the potatoes for 10 minutes. Drain and mix the potatoes with semolina and salt and pepper (and other seasonings you would like to add; for example garlic, thyme, rosemary, etc.)
Gently transfer the potatoes in the tray with the pre-heated oil and bake for 45-60 minutes, turning the potatoes half way through.