The cooking time for roast potatoes varies depending on the size of the pieces and the oven temperature. Typically:
- At 425°F (about 220°C), potatoes cut into 1-inch pieces roast for about 20 to 30 minutes until tender and golden brown.
- At 400°F (200°C), the roasting time is around 30 to 35 minutes.
- For a higher temperature of 450°F, roast potatoes take about 20 to 25 minutes.
- Larger chunks, about 2 inches, roast at 425°F for 40 to 45 minutes, tossing halfway through.
- A recipe using 400°F recommends about 35 minutes roasting time for 1-inch cubes.
- Another approach involves roasting at 400°F for 30 minutes, tossing, then roasting another 25 to 35 minutes for golden, crispy results, totaling about an hour.
- For ultimate crispiness, roasting in hot duck or goose fat or olive oil involves roasting for 15 minutes, turning, then roasting twice more (totaling 40-50 minutes) at a similar temperature.
In summary, roasting raw potatoes usually takes between 20 minutes to an hour depending on temperature, cut size, and method, with 425°F for 20-30 minutes being a sweet spot for 1-inch pieces. Tossing halfway and ensuring a single layer helps them roast evenly and crisp up.