To roast potatoes, the general roasting time at 425°F (218°C) for 1-inch potato cubes is about 25 to 30 minutes, stirring or tossing halfway through for even roasting and crispiness. Lower temperatures require longer cooking times, such as 45-50 minutes at 350°F or 30 minutes at 400°F. The key to crispy, tender roasted potatoes includes cutting them uniformly, optionally soaking to remove starch, drying well, using enough oil, spacing them in a single layer, and seasoning well.

Different sources vary slightly with size and temperature; for example, larger chunks (2-inch) may take 40-45 minutes at 425°F. Slow roasting at lower temperatures like 325°F can take 60 to 90 minutes for softer, chewier potatoes.

So a quick summary for typical 1-inch pieces:

• 425°F: 25-30 minutes
• 400°F: 30 minutes
• 375°F: 35-40 minutes
• 350°F: 45-50 minutes

These times are for tender and golden potatoes with a crispy exterior.