1, in general, 220 degrees, 30 minutes or so, depending on the size of the potatoes or potato pieces to decide the specific time.

2, if you choose to steam potatoes with the oven, baked potatoes, then about 230 °, and then steamed for 15 to 20 minutes can be, this time of the potato, the flavor is sweeter, and will not bake the old, and then the whole skin is more crispy and tender, and then also the overall more delicious, and this time of the nutrients are also more likely to be played out.