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1 When baking more than one potato, choose potatoes that are the same size, so they finish baking at the same time.  Preheat the oven (see table below). You can bake your potatoes at different temperatures, ranging from 400 degrees Fahrenheit (204.4 degrees Celsius) to 325 degrees Fahrenheit (162.7 degrees Celsius).
1 Bake the potatoes: You can bake the potatoes directly on the oven rack, or you can place them a few inches apart on a foil-lined baking sheet. 2  Bake the potatoes for 50 to 60 minutes.3  Flip them over every 20 minutes or so and check them for doneness by piercing them with a fork. Bake the potatoes: You can bake the potatoes directly on the oven rack, or you can place them a few inches apart on a foil-lined baking sheet. 2  Bake the potatoes for 50 to 60 minutes.