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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).
Preheat the oven to 400 degrees F. Place the potatoes directly on the rack in the center of the oven and bake for 30 minutes. Pierce each potato in a couple spots with a fork and continue to bake until tender, about 30 minutes more.Remove potatoes from the oven, and turn the heat down to 375 degrees F.Hold the potato with an oven-mit or towel, trim off the top of the potatoes to make a canoe-like shape. Reserve the tops.ierce each potato in a couple spots with a fork and continue to bake until tender, about 30 minutes more. Remove potatoes from the oven, and turn the heat down to 375 degrees F. Hold the potato with an oven-mit or towel, trim off the top of the potatoes to make a canoe-like shape.