Peel the sweet potatoes and cut into small cubes of about 1 cm. Mix in a bowl with the olive oil, spices and parmesan.
Spread everything on a baking sheet, it is important that all the potato cubes are individually. Roast the whole thing at 200 ° C (top / bottom heat) for 40 minutes. Eventually after the baking time, the potatoes can be roasted golden brown for 10 minutes on top heat.